Confused about SSIM..Spacers...block plate.
#82
Scottwax...
I'm with you on the most driveability possible....the spacers first then I'll built my own block off plate....With the present mods I've done on my 2003 A/T Maxima.. My Hybrid Shortram Intake along with my Cattman headers and exhaust and many other mods....my car pulls hard and consistently with so much torque in traffic it's a blast to drive and not have to step into the throttle to make things happen or to past someone....just a simple 1/4" -1/2" more into the throttle...I'll do my spacers, new coils, upgraded 04 v/c and some quick port clean up in mid December....But all in all Scottwax the Stock IM/w VIAS delete, NWP block plate did seem imo to be the better streetable combo when viewing the charts. I too believe in real world performance not that 100% dragstrip bull$#!t when I don't live at that above 5000 rpm range just going to the store or going on an out of state trip....yall get my point!
I'm with you on the most driveability possible....the spacers first then I'll built my own block off plate....With the present mods I've done on my 2003 A/T Maxima.. My Hybrid Shortram Intake along with my Cattman headers and exhaust and many other mods....my car pulls hard and consistently with so much torque in traffic it's a blast to drive and not have to step into the throttle to make things happen or to past someone....just a simple 1/4" -1/2" more into the throttle...I'll do my spacers, new coils, upgraded 04 v/c and some quick port clean up in mid December....But all in all Scottwax the Stock IM/w VIAS delete, NWP block plate did seem imo to be the better streetable combo when viewing the charts. I too believe in real world performance not that 100% dragstrip bull$#!t when I don't live at that above 5000 rpm range just going to the store or going on an out of state trip....yall get my point!
#83
Oh I cant tell you how Excited I am for Sunday
New Wheels
BBK
NWP Spacers
Sparkerduddeldoos
Front Strut Bar
Rear Sway
All I need is the block plate and Ill bee good to go.
Of course I will Take pics ( no need to ask )
New Wheels
BBK
NWP Spacers
Sparkerduddeldoos
Front Strut Bar
Rear Sway
All I need is the block plate and Ill bee good to go.
Of course I will Take pics ( no need to ask )
#84
Scottwax...
I'm with you on the most driveability possible....the spacers first then I'll built my own block off plate....With the present mods I've done on my 2003 A/T Maxima.. My Hybrid Shortram Intake along with my Cattman headers and exhaust and many other mods....my car pulls hard and consistently with so much torque in traffic it's a blast to drive and not have to step into the throttle to make things happen or to past someone....just a simple 1/4" -1/2" more into the throttle...I'll do my spacers, new coils, upgraded 04 v/c and some quick port clean up in mid December....But all in all Scottwax the Stock IM/w VIAS delete, NWP block plate did seem imo to be the better streetable combo when viewing the charts. I too believe in real world performance not that 100% dragstrip bull$#!t when I don't live at that above 5000 rpm range just going to the store or going on an out of state trip....yall get my point!
I'm with you on the most driveability possible....the spacers first then I'll built my own block off plate....With the present mods I've done on my 2003 A/T Maxima.. My Hybrid Shortram Intake along with my Cattman headers and exhaust and many other mods....my car pulls hard and consistently with so much torque in traffic it's a blast to drive and not have to step into the throttle to make things happen or to past someone....just a simple 1/4" -1/2" more into the throttle...I'll do my spacers, new coils, upgraded 04 v/c and some quick port clean up in mid December....But all in all Scottwax the Stock IM/w VIAS delete, NWP block plate did seem imo to be the better streetable combo when viewing the charts. I too believe in real world performance not that 100% dragstrip bull$#!t when I don't live at that above 5000 rpm range just going to the store or going on an out of state trip....yall get my point!
I loved the big cam and gears in my Chevelle but swapped a 455 into a Cutlass made a car just as fun because it had so much torque from just off idle to around 5000 rpms. The Cutlass wasn't as quick as the Chevelle (maybe mid to high 14s vs high 12s) but it was easier to live with just tooling around town and gas mileage was around 50% better in town and nearly double on the freeway (12 mpg vs 7 in town, 17 vs 9 on the freeway).
#85
Well, it isn't as fancy looking as the NWP plate, but I installed one of my homemade plates on Ghost's car this afternoon and we took it for a spin. I know he was happy with the results. Here's a few pics after the install. I'll let him chime in on the experience of driving with the VIAS deleted.
#86
Well, it isn't as fancy looking as the NWP plate, but I installed one of my homemade plates on Ghost's car this afternoon and we took it for a spin. I know he was happy with the results. Here's a few pics after the install. I'll let him chime in on the experience of driving with the VIAS deleted.
Either way, your plate looks great in those images. Can't wait to hear Ghost's opinions.
I'm guessing you just capped the other end of the vacuum tube, right? Have you given any thought to removing the entire vacuum canister? I don't know enough about that part, but it looks like its sole purpose is to support a steady vacuum pressure for the VIAS. Am I wrong, Knight? I'm thinking you'd know.
Last edited by Rochester; 11-28-2009 at 03:42 PM.
#87
You're a humble man, Knight. Or, you're a humble Knight, man.
Either way, your plate looks great in those images. Can't wait to hear Ghost's opinions.
I'm guessing you just capped the other end of the vacuum tube, right? Have you given any thought to removing the entire vacuum canister? I don't know enough about that part, but it looks like its sole purpose is to support a steady vacuum pressure for the VIAS. Am I wrong, Knight? I'm thinking you'd know.
Either way, your plate looks great in those images. Can't wait to hear Ghost's opinions.
I'm guessing you just capped the other end of the vacuum tube, right? Have you given any thought to removing the entire vacuum canister? I don't know enough about that part, but it looks like its sole purpose is to support a steady vacuum pressure for the VIAS. Am I wrong, Knight? I'm thinking you'd know.
I was under the impression that the canister is charcoal. But you may be right and it is like a small plenum to keep an air supply for the actuator on demand. I had that canister replaced last January when a deer committed suicide by jumping into the path of my car. I wish I cut the old canister in half to see what is really in there.
We could have taken the canister off, I know another guy who has done this, but it was getting late and the temps were dropping fast. You can't see it so I decided to leave it on for now. I know Ghost is hoping for spacers in the spring so I will take care of the canister at the same time.
Last edited by knight_yyz; 11-28-2009 at 05:25 PM.
#88
In that big thread about the power loss this summer, apparently the problem was after his mechanic did the spacer and block plate install, he removed the whole VIAS system, cannister and electrical stuff. Gave him a pending P1800 code and a noticable loss of power. Hooking all that stuff back up restored the power loss.
#89
Here is the link. Don't remove the cannister or electrical connections:
http://forums.maxima.org/5th-generat...no-fail-3.html
http://forums.maxima.org/5th-generat...no-fail-3.html
#91
Scott, how did you do your setup? from your ;ictures, I see you did not unplug the vac hose near the plate. But in your other pic the Vias is sitting on something and the hose there is still plugged into the actuator.
I was taking a look at another car with the VIAS delete and he has a small rubber cap on the vac port just in front of the plate, and the canister is gone. But the solenoid is there to keep the pending code from popping up. I see no reason to keep the canister if that port is blocked.
I was taking a look at another car with the VIAS delete and he has a small rubber cap on the vac port just in front of the plate, and the canister is gone. But the solenoid is there to keep the pending code from popping up. I see no reason to keep the canister if that port is blocked.
#94
#95
The solenoid only receives a signal for on or off from the ECU. It sends an 'on' signal between 1800-3600 RPM, and an 'off' signal the rest of the time. So according to that, the canister should be removable as long as it doesn't cause vacuum leak.
I don't see how removing the canister can cause a horsepower loss.
I don't see how removing the canister can cause a horsepower loss.
#96
Here is the link. Don't remove the cannister or electrical connections:
http://forums.maxima.org/5th-generat...no-fail-3.html
http://forums.maxima.org/5th-generat...no-fail-3.html
I suppose in the end it doesn't matter, it's 100% hidden if you're using your engine shroud. It just looks like so much useless crap supporting a valve that's no longer there.
Why would there be a huge charcoal filter canister as part of this system? The design seems almost crude. Does anyone know for sure what that thing is for?
Last edited by Rochester; 11-29-2009 at 05:47 AM.
#98
I know someone who put the cap on the spot where the yellow line points to. He took the canister off. He doesn't seem to have a power loss, but I guess a dyno will confirm that in the near future.
the solenoid shouldn't care that there are no hoses attached to it. It's just a tiny piston that moves back and forth to allow air to pass or not.
Last edited by knight_yyz; 11-29-2009 at 07:45 AM.
#99
I know someone who put the cap on the spot where the yellow line points to. He took the canister off. He doesn't seem to have a power loss, but I guess a dyno will confirm that in the near future.
the solenoid shouldn't care that there are no hoses attached to it. It's just a tiny piston that moves back and forth to allow air to pass or not.
the solenoid shouldn't care that there are no hoses attached to it. It's just a tiny piston that moves back and forth to allow air to pass or not.
I wrote to NWP just now to ask these questions. Figure, he's selling the VIAS-delete mod, so he maybe should know.
#100
FWIW- i have the cap where rochesters first pic is..and the rest of the system is intact,...dont have any problems and dont intend to take the 'system' out because everyhting is working and im not sure whats goin on in there lol
#101
I'm getting zero codes and pretty good power with the system as is just capping off the port as directed in the instructions for the block plate.
Hopefully Aaron will chime in on this.
#102
Scottwax...
I'm with you on the most driveability possible....the spacers first then I'll built my own block off plate....With the present mods I've done on my 2003 A/T Maxima.. My Hybrid Shortram Intake along with my Cattman headers and exhaust and many other mods....my car pulls hard and consistently with so much torque in traffic it's a blast to drive and not have to step into the throttle to make things happen or to past someone....just a simple 1/4" -1/2" more into the throttle...I'll do my spacers, new coils, upgraded 04 v/c and some quick port clean up in mid December....But all in all Scottwax the Stock IM/w VIAS delete, NWP block plate did seem imo to be the better streetable combo when viewing the charts. I too believe in real world performance not that 100% dragstrip bull$#!t when I don't live at that above 5000 rpm range just going to the store or going on an out of state trip....yall get my point!
I'm with you on the most driveability possible....the spacers first then I'll built my own block off plate....With the present mods I've done on my 2003 A/T Maxima.. My Hybrid Shortram Intake along with my Cattman headers and exhaust and many other mods....my car pulls hard and consistently with so much torque in traffic it's a blast to drive and not have to step into the throttle to make things happen or to past someone....just a simple 1/4" -1/2" more into the throttle...I'll do my spacers, new coils, upgraded 04 v/c and some quick port clean up in mid December....But all in all Scottwax the Stock IM/w VIAS delete, NWP block plate did seem imo to be the better streetable combo when viewing the charts. I too believe in real world performance not that 100% dragstrip bull$#!t when I don't live at that above 5000 rpm range just going to the store or going on an out of state trip....yall get my point!
#103
The only time I ever use cruise control is when I hit the horn and cruise control turns on accidentally. Can't say as I've ever intentionally given up control of the car.
I'm just saying.
I'm just saying.
#104
Maybe I should have been more clear about what I meant when I said "signal". Could be it has to read vacuum off the cannister. You can see a vacuum line that goes into the cannister.
I'm getting zero codes and pretty good power with the system as is just capping off the port as directed in the instructions for the block plate.
Hopefully Aaron will chime in on this.
I'm getting zero codes and pretty good power with the system as is just capping off the port as directed in the instructions for the block plate.
Hopefully Aaron will chime in on this.
Maybe we'll get something informative here in the next few days. By my way of thinking, if I'm going to run with a VIAS-delete, and that canister can also be deleted... then bye bye big ugly canister.
#105
i dont enjoy my ride to work, dont really care at that point, just get there and get out, no performance useage for me, you'd never know my car is modded when i go to work, ppl drivin by me, modded car that i know i can beat fakin on me, time and place for everything, and at 7:30 in the morning, i dont really care, time for my car to take it easy
#106
Knights thinking is right, the canister is there as a reservoir of sorts to supply vacuum to the VIAS. The VIAS opens with the suction provided by the canister via the UIM. The solenoid is there to turn the suction on and off and open the VIAS. You can cap the UIM at the yellow line, pull all the hoses off the solenoid and take the canister out. It serves zero purpose once the VIAS is deleted. The important part is leaving the solenoid and its electrical connector plugged in. It will still receive the signal from the ECU and open and close but once you install the block plate its functioning isnt important.
And Scott, the spacers complement the block plate very well. You will gain back some of the low end torque loss. I highly recommend them.
And Scott, the spacers complement the block plate very well. You will gain back some of the low end torque loss. I highly recommend them.
#108
I don't know without gutting it, but I'm thinking the VIAS needs vacuum pressure at an exact constant in order to be accurately controlled. That canister might be a pressure reservoir. Otherwise, pressure is variable based on engine speed.
Last edited by Rochester; 11-29-2009 at 10:41 AM.
#109
#110
The canister might be a pneumatic accumulator. According to Courtesy parts website the item is called Tank Assy-Pressure. so I would hazard a guess that it is there to make sure the VIAS has the required pressure to operate when the solenoid is tripped.
And according to nissan it is a part meant to the last the life of the car. When mine broke during the deer incident the only canister available according to Nissan Canada was in Vancouver BC. They said I was probably the first on to order one.
And according to nissan it is a part meant to the last the life of the car. When mine broke during the deer incident the only canister available according to Nissan Canada was in Vancouver BC. They said I was probably the first on to order one.
#111
This info today from NWP Engineering. Note the "extra vacuum caps" comment.
- - - - - - - - - - - - - - -
- - - - - - - - - - - - - - -
Yes, you do have to retain the solenoid and keep the electrical connector plugged in. Otherwise, you will get a P1800 VIAS Solenoid code.
Yes, you can remove that big canister. It is a vacuum surge tank. It ensures that the VIAS actuator always has enough vacuum in order to function properly regardless of the vacuum that the engine is putting out. You’ve got the right idea. I removed my vacuum tank on my VQ35. You just need extra vacuum caps, which I will be MORE than happy to throw in for free. Just let me know when you place your order.
Yes, you can remove that big canister. It is a vacuum surge tank. It ensures that the VIAS actuator always has enough vacuum in order to function properly regardless of the vacuum that the engine is putting out. You’ve got the right idea. I removed my vacuum tank on my VQ35. You just need extra vacuum caps, which I will be MORE than happy to throw in for free. Just let me know when you place your order.
#114
You don't really need extra vacuum caps to cap both orifices on the solenoid. But it will prevent debris from getting in there. The important thing is that you do not have any intake leaks by capping off the orifice on the intake manifold itself. And leave the electrical connector plugged in on the solenoid and you'll be fine.
#115
Well, it isn't as fancy looking as the NWP plate, but I installed one of my homemade plates on Ghost's car this afternoon and we took it for a spin. I know he was happy with the results. Here's a few pics after the install. I'll let him chime in on the experience of driving with the VIAS deleted.
This latest install mod has been a very pleasant surprise, the car just fly's through the RPM's and truly delivers some very impressive torque from 3000 rpm plus. Now some have mentioned some loss on the low end torque, I just don't feel any loss at all, I am trying to understand what may be the difference with my car vs the other guys. So i'll start with some of my other mods to see if you guys come to the same conclusion as I am getting to.
1. I have installed ES bushings on both the front and rear motor mounts, so really no wheel spin all power is direct to the ground on take off.
2. I have a custom (berk) knock off short ram, with a BPI velocity stack and the over sized air filter.
3. I removed the accordion coupler at the IM and replaced it with a proper silicon couplers.
4. I have the 17* advance on the timing which assists greatly in returning some of the low end torgue (and improves middle and upper end torque) with the install of a short air ram.
So I am leaning very strongly to the combination of the other mods as to why I don't see any low end loss. ok enough of my thoughts on the way and now for the fun stuff.
I am blown away by the get and go, mid range 3000 up is just a gas the pull I felt was fantastic until I hit 4500 through 6400 I felt even more pull not to mention that the roar of a VQ is simply awesome ... yeeha get out of my way I coming through.
I am trying to put a couple of short videos together for others to see and experience the feeling of such a simple mod and inexpensive. Stand still launch to wot - a rolling punch up to wot from a mid range cruising speed - and perhaps one more when driving at hwy speed (up here 100kmph) and then a punch it through to upper end of the rpm, of course picking the right time and place are key.
Scott mentioned in one of his posts that he has a particular hill (I assume it is a strong up hill grade) we have one very local here, which is the hwy 6 up hill grade up the escarpment, I travel on it most every morning well I must say ...wow do I ever get some mean *** pull going up this thing (perhaps a video of this would be a nice addition). In the spring it will be time (well probably way past time) to replace the spark plugs which I am hoping to also install NWP spacers (well actually I am hoping to get Ray to do the install) this should make a very nice addition to the overall performance of the engine and doing what one can to improve the the breathing of the engine so it can produce all that it can given the bolt on's that have been added.
To sum up, this is one fantastic little mod that delivers
#116
Thanks for writing that down, Jim. I was hoping we'd here from you about Knight's custom VIAS-delete sometime soon, and you didn't disappoint. In fact, that might be the longest post you've ever written! Very cool.
I have to say, I'm pretty surprised so many people are claiming a welcome improvement in the upper range with (primarily) intake & exhaust mods; in other words, without the phenolic spacers.
From what I understand, the low-end loss is so minimal. You might not be feeling it because you've got that extra snap from the solid poly mount bushings. And let's remember, it's cold out now, so we're all pulling a little stronger; (at least, those of us up North.)
"the roar of the VQ" -- are you saying you noticed a audible change? What would that be? Decibels or tone?
Of course we'd want to watch your videos!
So... spacers next Spring? You're gonna love them.
I have to say, I'm pretty surprised so many people are claiming a welcome improvement in the upper range with (primarily) intake & exhaust mods; in other words, without the phenolic spacers.
From what I understand, the low-end loss is so minimal. You might not be feeling it because you've got that extra snap from the solid poly mount bushings. And let's remember, it's cold out now, so we're all pulling a little stronger; (at least, those of us up North.)
"the roar of the VQ" -- are you saying you noticed a audible change? What would that be? Decibels or tone?
Of course we'd want to watch your videos!
So... spacers next Spring? You're gonna love them.
#118
#119
I recieved my NWP plate but not sure if I'm going to install it in the cold. I'm doing an oil change this weekend, so I'll see how cold my fingers get doing that. Glad to hear another positive review from Ghost.
#120
Okay ladies and Gents.
Install of NWP spacers........
My review is OMFG best bang for your buck. It whistles and makes the motor sound totally different.
As for Butt Dyno- Totally different car it pulls and pulls especially on the highway wow.
IT took 2 hours for install used the 1 minute rtv goop and it works quite well
ON a side not I did notice oil in my top right rear spark plug area!!! so i guess Its time for the gasket and 04 swap.
But best mod for the money
Good job Aaron!!
Install of NWP spacers........
My review is OMFG best bang for your buck. It whistles and makes the motor sound totally different.
As for Butt Dyno- Totally different car it pulls and pulls especially on the highway wow.
IT took 2 hours for install used the 1 minute rtv goop and it works quite well
ON a side not I did notice oil in my top right rear spark plug area!!! so i guess Its time for the gasket and 04 swap.
But best mod for the money
Good job Aaron!!