2k2 SE 6-Speed I/H/E 250 HP / 244 ft-lbs
when you go from a 2.25" exhaust with a resonator to a 3" none resonated exhaust... you are going to gain noise...
Also, have fun fitting a 2.25" muffler to a 3" exhaust.
there is always a price to pay for making power, in this case he is freeing up more power thats there, you woul dhave to run a muffler that fits the exhaust but i dont know of a oem quiet 3" muffler that would fit a max.
Question to the OP:
Your low-end torque was lacking in the first 2 runs compared to the others. I mean, the torque was lower throughout the entire powerband, but the low-end in particular was anemic. Were you throwing any codes then? Changed plugs? I'm just wondering because it seems kinda weak even when compared to other 2k2's with similar mods.
Your low-end torque was lacking in the first 2 runs compared to the others. I mean, the torque was lower throughout the entire powerband, but the low-end in particular was anemic. Were you throwing any codes then? Changed plugs? I'm just wondering because it seems kinda weak even when compared to other 2k2's with similar mods.
Last edited by nismology; Feb 19, 2008 at 09:17 AM.
Question to the OP:
Your low-end torque was lacking in the first 2 runs compared to the others. I mean, the torque was lower throughout the entire powerband, but the low-end in particular was anemic. Were you throwing any codes then? Changed plugs? I'm just wondering because it seems kinda weak even when compared to other 2k2's with similar mods.
Your low-end torque was lacking in the first 2 runs compared to the others. I mean, the torque was lower throughout the entire powerband, but the low-end in particular was anemic. Were you throwing any codes then? Changed plugs? I'm just wondering because it seems kinda weak even when compared to other 2k2's with similar mods.
The only difference was the front O2 was bad on the first run, but at WOT I have been told the o2's have no effect on the car.
im looking to get a exaugst system... this sounds like this is what im going to go with....all im going to have for now is going to be just IM spacers, intake and the exaugst..will i still see the power and not lose low end or anything?? i dont mind the noise but you can resonate it tho right?
im looking to get a exaugst system... this sounds like this is what im going to go with....all im going to have for now is going to be just IM spacers, intake and the exaugst..will i still see the power and not lose low end or anything?? i dont mind the noise but you can resonate it tho right?
I am the only person with a 3" Exhaust for the VQ35 (Maxima) right now... Before these dynos it was said that you would lose power, so obviously no one is going to have any clue because that "myth" has been around since the VQ35 was introduced...
Joined: Oct 2005
Posts: 4,572
From: Middleboro/Carver, Ma
im looking to get a exaugst system... this sounds like this is what im going to go with....all im going to have for now is going to be just IM spacers, intake and the exaugst..will i still see the power and not lose low end or anything?? i dont mind the noise but you can resonate it tho right?
There is no way to tell...
I am the only person with a 3" Exhaust for the VQ35 (Maxima) right now... Before these dynos it was said that you would lose power, so obviously no one is going to have any clue because that "myth" has been around since the VQ35 was introduced...
I am the only person with a 3" Exhaust for the VQ35 (Maxima) right now... Before these dynos it was said that you would lose power, so obviously no one is going to have any clue because that "myth" has been around since the VQ35 was introduced...
I've got a Warpspeed 3" everything in the '99, starting at the custom-built OBX/3"collector and onto the 3" hi-flow cat back through the 3" Magnaflow muffler - since last fall..
???
I do NOT feel like I "lost power" - I can't keep it on the road when NA.
intake on an FWD VQ35DE engine,
I may sound like a hypocrite, BUT, the fact is, I KNOW intakes make power
on these cars, whether tuned or not. I have the DRF's for proof, as well
as other members DRF proof too. I choose not to have one because, IMO, I
like the way mine sounds/feels without one. Smooth, linear, and very
subtle hint of throatiness. I do, however, have an 'intake', just not by
conventional terms.
My best dyno to date was with a cone filter. I do plan on dynoing some
time soon just so I can see how much I can squeeze out of the stock
muffler and stock panel filter, not because I think it will make more power, but I
want to see my limits on this set-up, because that's the way I choose to
do business.
Cliffs: If you don't mind the wail, get an intake, they do add power.
When I first got the cammed 3.5 running, I had a shorty intake and cone filter. I wanted to try the Ingen stuff I had and using a couple of pieces of 3" aluminum, extended the filter forward and down below the battery, where I used to have it when spraying the 3.0.
This move really lost the top-end punch - but then the bi-weekly blizzards started so I haven't changed things back to the shorty intake - yet. Coupled with a SSIM mod, I should have fun when warm weather gets here...
Ok, unless someone can prove that a stock intake makes more power than no
intake on an FWD VQ35DE engine,
I may sound like a hypocrite, BUT, the fact is, I KNOW intakes make power
on these cars, whether tuned or not. I have the DRF's for proof, as well
as other members DRF proof too. I choose not to have one because, IMO, I
like the way mine sounds/feels without one. Smooth, linear, and very
subtle hint of throatiness. I do, however, have an 'intake', just not by
conventional terms.
My best dyno to date was with a cone filter. I do plan on dynoing some
time soon just so I can see how much I can squeeze out of the stock
muffler and stock panel filter, not because I think it will make more power, but I
want to see my limits on this set-up, because that's the way I choose to
do business.
Cliffs: If you don't mind the wail, get an intake, they do add power.
intake on an FWD VQ35DE engine,
I may sound like a hypocrite, BUT, the fact is, I KNOW intakes make power
on these cars, whether tuned or not. I have the DRF's for proof, as well
as other members DRF proof too. I choose not to have one because, IMO, I
like the way mine sounds/feels without one. Smooth, linear, and very
subtle hint of throatiness. I do, however, have an 'intake', just not by
conventional terms.
My best dyno to date was with a cone filter. I do plan on dynoing some
time soon just so I can see how much I can squeeze out of the stock
muffler and stock panel filter, not because I think it will make more power, but I
want to see my limits on this set-up, because that's the way I choose to
do business.
Cliffs: If you don't mind the wail, get an intake, they do add power.
Or do what I do. Run an exhaust system loud enough to drown out the intake noise. Between my exhaust and the whistling from the spacers, I don't notice my intake at all.
My apology, didn't do a search of the entire org for 3.5 3" exhausts... and I ment to state for NA... as 3" is imo a must for FI
Last edited by Merlyn; Feb 27, 2008 at 04:46 PM.
Each exhaust pulse "pops" out of the tailpipe while idling, so I think the exhaust system is working pretty well. Now if the weather would finally warm up, I could finish up the intake.
As far as intakes go, I'll add my $.02. We've dynoed intakes on the VQ35DE at various times, under various circumstances. When properly designed, they make power, period, but of course the amount of power and where that power occurs across the rpm band depends on the specific intake.
Since this is a VQ35DE-related discussion, I'll limit my comments to 02/03 intake applications.
My favorite intake on this car is the most simple and affordable (except for ebay junk) available, the JWT POP intake. It will make 5-7whp on the car, which is within 1-2 whp of any intake you can buy, but at half the price (or less) of other brands.
I like the quick, no-lag response of short-ram intakes but HATE the the turbulance they typically create only inches from the MAF hot wire. Make no mistake, the eccentric electrical signal (from MAF to ECU) caused by this turbulance wreaks havoc on performance and gas mileage.
But that's what sets the JWT design apart from other short-rams. Their design features a large cast-aluminum velocity stack coupled with an excellent purpose-built filter, and the result is a radical reduction in turbulance. We've done extensive dyno testing comparing the JWT POP with a good K&N filter + MAF adapter (which would be equivalent to the other short-ram designs out there), and the difference in dyno performance (and the electrical signal from the MAF) is as clear as night and day, particularly if all the smoothing function is removed in the dyno software.
In the interest of fairness, I'll also point out that the Stillen short ram intake includes a copy of JWT's velocity stack (which I think they actually licensed from JWT, believe it or not), but they use an off-the-shelf K&N filter that does not include the complimentary design features that JWT includes in the purpose-built POP filter that S&B (an outstanding Cali filter manufacturer) makes for them. The Stillen product is also somewhat more expensive, so the performance and cost advantage goes to JWT.
Not surprisingly, we happen to sell the JWT POP intake. The price is a reasonable $125 (minus our max.org discount it's $118.75 + they ship cheaply) and just about everybody installs their own because its so simple. We sell a lot of these, and just received new inventory. Give us a call at 800.759.9920 (continental US except AZ), 888.296.5153 (Canada and AZ) or 520.575.6195 (everywhere else); hours are 9-5MST, M-F.
Brian C Catts
Cattman Performance
Since this is a VQ35DE-related discussion, I'll limit my comments to 02/03 intake applications.
My favorite intake on this car is the most simple and affordable (except for ebay junk) available, the JWT POP intake. It will make 5-7whp on the car, which is within 1-2 whp of any intake you can buy, but at half the price (or less) of other brands.
I like the quick, no-lag response of short-ram intakes but HATE the the turbulance they typically create only inches from the MAF hot wire. Make no mistake, the eccentric electrical signal (from MAF to ECU) caused by this turbulance wreaks havoc on performance and gas mileage.
But that's what sets the JWT design apart from other short-rams. Their design features a large cast-aluminum velocity stack coupled with an excellent purpose-built filter, and the result is a radical reduction in turbulance. We've done extensive dyno testing comparing the JWT POP with a good K&N filter + MAF adapter (which would be equivalent to the other short-ram designs out there), and the difference in dyno performance (and the electrical signal from the MAF) is as clear as night and day, particularly if all the smoothing function is removed in the dyno software.
In the interest of fairness, I'll also point out that the Stillen short ram intake includes a copy of JWT's velocity stack (which I think they actually licensed from JWT, believe it or not), but they use an off-the-shelf K&N filter that does not include the complimentary design features that JWT includes in the purpose-built POP filter that S&B (an outstanding Cali filter manufacturer) makes for them. The Stillen product is also somewhat more expensive, so the performance and cost advantage goes to JWT.
Not surprisingly, we happen to sell the JWT POP intake. The price is a reasonable $125 (minus our max.org discount it's $118.75 + they ship cheaply) and just about everybody installs their own because its so simple. We sell a lot of these, and just received new inventory. Give us a call at 800.759.9920 (continental US except AZ), 888.296.5153 (Canada and AZ) or 520.575.6195 (everywhere else); hours are 9-5MST, M-F.
Brian C Catts
Cattman Performance
We'll be making a batch of 3" Cattman catbacks for the 00-03 Maxima (00-04 I30/I35) later this month.
Give us a call if interested because we'll be offering discounts for backorders (no payment until the parts are ready). Customers have the option of including our 22" all-stainless resonator for $729.99 or leaving it out for $659.99 (these are backorder prices). Turbo applications really don't need the rez, but I think that other vehicles will be too loud without one.
Even though we designed this part a year or two ago, this will be the first production batch and we'd like to find a customer in southern California who can bring his car in to confirm that everything's perfect. We would pay back this favor with either a free install or a discount on the part. Give us a call if you're near enough to Westminster (OC) to bring your car by.
Cattman Performance can be reached at 800.759.9920 (US except AZ), 888.296.5153 (Canada and AZ) or 520.575.6195. We're open 9-5 MST, M-F.
Brian
Give us a call if interested because we'll be offering discounts for backorders (no payment until the parts are ready). Customers have the option of including our 22" all-stainless resonator for $729.99 or leaving it out for $659.99 (these are backorder prices). Turbo applications really don't need the rez, but I think that other vehicles will be too loud without one.
Even though we designed this part a year or two ago, this will be the first production batch and we'd like to find a customer in southern California who can bring his car in to confirm that everything's perfect. We would pay back this favor with either a free install or a discount on the part. Give us a call if you're near enough to Westminster (OC) to bring your car by.
Cattman Performance can be reached at 800.759.9920 (US except AZ), 888.296.5153 (Canada and AZ) or 520.575.6195. We're open 9-5 MST, M-F.
Brian
Last edited by Cattman; Aug 12, 2008 at 12:05 PM.
Merlyn, I hadn't realized that was you on the YT video! I remember watching it the first week it came out and instantly favorited it due to the amazing sound and smooth run featured. Good deal. Beautiful #s btw.
