Finally got a VIAS block plate....the verdict is...
04-26-2010, 01:36 PM
#82
I can't report on the vias specifically, but I can compare gas mileage completely stock with full boltons + tune.
Stock I was getting 16-19 city and 24-26 highway**** My normal commute with 75% highway 25% city would be 22-23mpg
Intake, spacers, vias delete, headers/ypipe, test pipe, 3" catback, UTEC tuned and I now see around 19-22 city and 26-29 on the higyway. My normal commute with 75% highway 25% city is 25-26mpg
I don't know which of those mods added/lost, but in total I've gained 3-4mpg overall.
Stock I was getting 16-19 city and 24-26 highway**** My normal commute with 75% highway 25% city would be 22-23mpg
Intake, spacers, vias delete, headers/ypipe, test pipe, 3" catback, UTEC tuned and I now see around 19-22 city and 26-29 on the higyway. My normal commute with 75% highway 25% city is 25-26mpg
I don't know which of those mods added/lost, but in total I've gained 3-4mpg overall.
Edited for trip computer accuracy.
04-26-2010, 02:03 PM
#83
04-26-2010, 02:06 PM
#84
Sparks, does a bunch of oil drip out of the breather filter for you?
A friend of mine down here just uses a peice of hose there slightly angled up but not connected back to the intake. So i guess if it spits out any oil it will just drain back into the valve cover. It doesn't look as nifty as the filter but it might end up being a little less messy. Do you see anything wrong with this setup?
A friend of mine down here just uses a peice of hose there slightly angled up but not connected back to the intake. So i guess if it spits out any oil it will just drain back into the valve cover. It doesn't look as nifty as the filter but it might end up being a little less messy. Do you see anything wrong with this setup?
04-26-2010, 02:16 PM
#85
Senior Member
Join Date: Dec 2005
Location: Leicester, Ma
Posts: 1,124
Rochester, if you're planning on doing this mod in May, why dont you make it yourself and save the money for something else. i did just that with 1/16th inch steel, used a saws-all, bench grinder and got mine to fit. All i did was clean the mani to get it clean, used RTV and bolted on it is leak free. i think it took me all of and hour or less to do. I agree with Sparks and Grand on this too. I can feel a slight difference and def fell it left some on the table at the low end and gain or feels like it gained like sparks says in the top end. Im just glad i didn't spend 40 bucks for it.
04-26-2010, 02:24 PM
#86
Rochester, if you're planning on doing this mod in May, why dont you make it yourself and save the money for something else. i did just that with 1/16th inch steel, used a saws-all, bench grinder and got mine to fit. All i did was clean the mani to get it clean, used RTV and bolted on it is leak free. i think it took me all of and hour or less to do. I agree with Sparks and Grand on this too. I can feel a slight difference and def fell it left some on the table at the low end and gain or feels like it gained like sparks says in the top end. Im just glad i didn't spend 40 bucks for it.
04-26-2010, 02:35 PM
#87
It takes a couple minutes to cut it off the original one. I'm not knocking NWP in anyway, but I personally wouldnt pay for it. But that's because I currently am jobless..
Now the spacers I'd get in a heartbeat.
Now the spacers I'd get in a heartbeat.
04-26-2010, 03:01 PM
#88
Rochester, if you're planning on doing this mod in May, why dont you make it yourself and save the money for something else. i did just that with 1/16th inch steel, used a saws-all, bench grinder and got mine to fit. All i did was clean the mani to get it clean, used RTV and bolted on it is leak free. i think it took me all of and hour or less to do. I agree with Sparks and Grand on this too. I can feel a slight difference and def fell it left some on the table at the low end and gain or feels like it gained like sparks says in the top end. Im just glad i didn't spend 40 bucks for it.
...as soon as he get em back in stock.
04-26-2010, 04:03 PM
#89
Drive it a few days, takes time for the ECU to adjust to it, just like with any mod that affect airflow through the engine.
04-26-2010, 04:16 PM
#90
May be you are right. I should give it a little time. I'm going next Friday to track to see if it helps any. Also order the cattman 3" cat-back. After I receive that I will be doing dyno.
04-26-2010, 05:27 PM
#91
DO NOT DO BUSINESS WITH THIS MEMBER - OWES PEOPLE MONEY
iTrader: (7)
Join Date: Jan 2008
Location: Greensboro, NC
Posts: 3,468
It's a 87 (FC). It's sitting stripped in the driveway waiting for me to invest in a 5-lug swap, LSX mount kit, and a LQ4/TH350 + tons of electronics/accessories. It's going to be a long project but won't cost too much and should be stupid fast at the drag strip. Ultimate plan is to turbo the LQ4 and go with a solid rear end but that will be years down the line.
04-26-2010, 06:39 PM
#92
Junior Member
Join Date: Apr 2010
Location: Tahlequah, OK
Posts: 65
I remember when i was wanting to do this. I definitely did not want to pay the 60 bucks for the plate so i took the stock one and cut the butterfly plate part off the back and grinded it smooth. Threaded the hole left behind in the middle and stuck a short stud into it. Very easy to make one for those who are creative and have a tight budget. Removal to see what you would be up against is extremely easy as it only takes a minute or two to take out.
Anyway, after modifying the plate i noticed a slightly better topend pull. Also the bottom end felt the same pretty much so that was good. I felt more positive feelings about it than negative, not to mention getting rid of the vacuums and that ugly black canister really cleans things up. I would definitely recommend it whether it be custom or the real deal, ugly or shiny new whatever one's tastes may be.
Anyway, after modifying the plate i noticed a slightly better topend pull. Also the bottom end felt the same pretty much so that was good. I felt more positive feelings about it than negative, not to mention getting rid of the vacuums and that ugly black canister really cleans things up. I would definitely recommend it whether it be custom or the real deal, ugly or shiny new whatever one's tastes may be.
04-26-2010, 07:12 PM
#94
Senior Member
Thread Starter
Join Date: May 2009
Location: Illinois
Posts: 399
ditto......I had disconnected my negative while I was doing the delete.....then started car and let idle for 5 mins or so to relearn air flow at idle.....seemed to work I guess.
04-26-2010, 07:21 PM
#95
It doesn't take as long for the ECU to adjust to mods as you all think. It does it on the fly via the o2 feedback loop (while in closed loop)...
Your short term fuel trims adjust almost instantly, and the long terms will take a little longer, but the long term fuel trims wont change the way the car runs, they are just there to absorb some of the offset so the short terms don't have to change as much.
If you don't notice any difference by the time you get down to the end of your street, you wont notice one at all.
Your short term fuel trims adjust almost instantly, and the long terms will take a little longer, but the long term fuel trims wont change the way the car runs, they are just there to absorb some of the offset so the short terms don't have to change as much.
If you don't notice any difference by the time you get down to the end of your street, you wont notice one at all.
04-26-2010, 07:24 PM
#96
DO NOT DO BUSINESS WITH THIS MEMBER - OWES PEOPLE MONEY
iTrader: (7)
Join Date: Jan 2008
Location: Greensboro, NC
Posts: 3,468
It doesn't take as long for the ECU to adjust to mods as you all think. It does it on the fly via the o2 feedback loop (while in closed loop)...
Your short term fuel trims adjust almost instantly, and the long terms will take a little longer, but the long term fuel trims wont change the way the car runs, they are just there to absorb some of the offset so the short terms don't have to change as much.
If you don't notice any difference by the time you get down to the end of your street, you wont notice one at all.
Your short term fuel trims adjust almost instantly, and the long terms will take a little longer, but the long term fuel trims wont change the way the car runs, they are just there to absorb some of the offset so the short terms don't have to change as much.
If you don't notice any difference by the time you get down to the end of your street, you wont notice one at all.
04-26-2010, 07:45 PM
#97
Btw, does your wideband read around 13.9-14.2 when cruising? Mine does and I'm thinking that it's a little too rich for just cruising.
04-26-2010, 08:38 PM
#99
For all the people who have the BOP and felt no difference, what speeds did you take it up to? I felt the car definitely pulled harder after 80MPH to ..... and can understand how driving around town or going WOT till ~60-70MPH you felt no difference.
04-28-2010, 08:18 PM
#101
Maybe Nissan's next engine will have a continuously variable VIAS (I know the wording doesn't make sense)...
Instead of just two positions, it can be everywhere in between, optimized for each RPM and load.
Just thinking.
Instead of just two positions, it can be everywhere in between, optimized for each RPM and load.
Just thinking.
04-28-2010, 08:26 PM
#102
Senior Member
Join Date: Oct 2008
Posts: 296
you make a good point, i have no clue how vias even works, all i know is my car made alot more low end torque before. would porting the stock manifold make a difference??
04-28-2010, 08:35 PM
#103
It basically changes the effective length of the intake runners, thus "tuning" the manifold for different RPM ranges.
http://en.wikipedia.org/wiki/Variabl...ntake_manifold
And porting is always good, assuming you know what you're doing.
04-29-2010, 10:07 AM
#105
Seems pretty good for the price, think it great I might get that soon always good to have that top end power since alot of people like to be pushing between 80 to 100 plus messing around on freeway late nights!!
04-29-2010, 10:18 AM
#106
DO NOT DO BUSINESS WITH THIS MEMBER - OWES PEOPLE MONEY
iTrader: (7)
Join Date: Jan 2008
Location: Greensboro, NC
Posts: 3,468
You don't have to be going 80+ mph to make use of top end power... Maybe you'll get lucky and get caught before you kill yourself.
Last edited by sparks03max; 04-29-2010 at 10:20 AM.
04-29-2010, 03:08 PM
#107
04-30-2010, 03:16 PM
#110
Senior Member
Thread Starter
Join Date: May 2009
Location: Illinois
Posts: 399
It is not about the speed....it is about the RPM range....therefore...the benefits are realized in every gear at the top end....furthermore....once the car is in motion and AT highway speeds...horsepower is more beneficial than torque.
I swear...some of you guys make it sound like the car loses 100 lb/ft of torque with this....and turns into a Smart for Two...
We are all adults here (I hope!)....one can render their opinion without the insults.
04-30-2010, 03:27 PM
#111
Who's the bozo?
04-30-2010, 03:41 PM
#112
Senior Member
Thread Starter
Join Date: May 2009
Location: Illinois
Posts: 399
04-30-2010, 04:40 PM
#114
04-30-2010, 07:40 PM
#117
05-01-2010, 04:38 AM
#118
In this case, "top end" is in reference to engine speed, not car speed. The shift in HP, from removing your VIAS, provides small HP gains when the engine speed is over 3800 rpm (or thereabouts). So if you're doing 80 mph in 6th gear and 3000 rpm, the improved air flow does not come into play.
In the last 10 years, I can count those events on one hand. When I was a kid, nightly. I don't say that with pride.
In the last 10 years, I can count those events on one hand. When I was a kid, nightly. I don't say that with pride.
05-01-2010, 07:04 AM
#120
DO NOT DO BUSINESS WITH THIS MEMBER - OWES PEOPLE MONEY
iTrader: (7)
Join Date: Jan 2008
Location: Greensboro, NC
Posts: 3,468
In this case, "top end" is in reference to engine speed, not car speed. The shift in HP, from removing your VIAS, provides small HP gains when the engine speed is over 3800 rpm (or thereabouts). So if you're doing 80 mph in 6th gear and 3000 rpm, the improved air flow does not come into play.
In the last 10 years, I can count those events on one hand. When I was a kid, nightly. I don't say that with pride.
In the last 10 years, I can count those events on one hand. When I was a kid, nightly. I don't say that with pride.
Harsh, but that's a good law. I've personally watched one of my friends get out of going 110 in a 65... He just talked his way out of it and even if he had gotten the ticket (without reckless driving) he could have gotten it dropped to an insignificant charge with a lawyer. I'd rather it be harsh like yours than a joke like it is here.