Hi there...i just want to know guys how much HP do ia have with my maxima setup...i installed everything last day.

1. Intake
2. Y pipe from warpspeed
3. Apexi WS catback
4. UND pulley from Nick
5. Tranny cooler(i know this not help hp)

im preparing my self to track next week...ejejeje...My car runs 15.9 before 3, 4 setup.

 

maybe 220hp. There are people who got around 30hp to the wheels with just i/y/e. I can't tell you for sure, get a dyno or a gtech...

 

yeah i want to test my car with gtech...but i just want to know if my invest jejeje was ok.

 

1. Intake 5-7hp
2. Y pipe from warpspeed 10-20hp
3. Apexi WS catback 8-12hp
4. UND pulley from Nick 6-8hp
29-47hp

Stock Maxima @ crank 190hp you do the math.

Does that sound about right? That's off the top of my head, so give or take a few, since every car is different.

 

I've seen y pipe and popcharger make 170hp at the wheels. So add a couple for what you have done.

 

Stillen's numbers:
Intake 6
Exhaust 8-12
Pulley 8
Y pipe 10-20

I can't argue with those

 

In my opinion:

1. Intake: 3-4HP
2. Y pipe: 12-18HP
3. Apexi WS catback: 4-6HP
4. UND pulley: 5-7HP
5. Tranny cooler(i know this not help hp)

Total gain at the wheels 24-35HP. A stock 5-spd is about 165HP at the wheels. SO you shouldbe dynoing about 189HP at the wheels. I think my lower range estimate is more accurate to what you'll get since the compounding effect of the mods are not as effective as single mods sometimes.

Check the dyno forums and you should be able to find exact numbers. Remember that each car is different and responds to mods differently.

 

I agree with these numbers....

4-6 hp sounds much better for the catback

 

You dont know untill you Dyno, Some people here are under estimating and some are over estimating. Test it your self. Try Brake tourqing. and remove your spare wheel.

 

How do brake torquing and removing the spare wheel help on the dyno???

 

ahh just pop in a turbo and make ur lives less miserable by addin up numbers

 

well well...i will tell you guys what about my 1/4 time after this mods...man!! i will be sick if my time is the same after the cat black and pulley mod installed.

 

You guys have to realize that mods gain more power when used together with other mods. Putting an intake on a stock car can maybe get you 3-5hp, but put it on a car with exhaust work and the same intake will get you 8-10hp...

 

+1

 

well, ivelweyz is right....i think all this mods produce more hp togheter..i just want to know a few ideas of hp

 

how's ur tranny holding up after the rebuild?

u should get ABOUT 28+ hp to the wheels

 

after my tranny was rebuilt it took like 1000 miles before my hard foot started to pull hehehe. But it feels more smooth and quick shift on it. My tranny cooler also do a great job.

 

What are the benefits of the tranny cooler? Can you elaborate a bit more please and indicate what kind you got and how it was installed... if you don't mind...

I was thinking that it would help at the track with all the beating that the tranny gets on back-to-back-to-back runs...

 

Don't BRAKE TORQUE as it's not really good for the tranny...

 

https://maxima.org/shoptalk/sub_modi...er/index.shtml

 

3-5 for the B pipe from smoother bends and 1-2 from the muffler for a better design... not 8-12hp

 

Y pipe is 18 hp http://www.motorvate.ca/mvp.php/504
B pipe is 8 hp http://www.motorvate.ca/mvp.php/522 now add a muffler, what do you get? 8-12 hp.

 

on the page you just posted "As you can see PEEK numbers don't always tell the complete story. If you have a broad torque curve like the VQ30DE, then peek numbers may not matter. It is MUCH better to have this type of increase over a wide RPM band." he got 8 peak, essentially 2-3 across the whole band...look at the ENTIRE dyno. what if you lose power across the band and get 20hp at redline (mevi for example) was it a gain or a loss? anyway, back to B pipes http://forums.maxima.org/showthread.php?t=236185

 

As tested on the dyno with my 5 speed:

HKS intake, Y-pipe, muffler = 175fwhp/192fwtq

STOCK intake, K&N panel filter, no intake resonators, y-pipe, muffler = 174fwhp/192fwtq

As you can see, intakes do VERY little for these cars. It's mostly a noise mod.

An automatic 4th gen with just a y-pipe alone will make around 165fwhp. The same Maxima made 154fwhp bonestock. I've seen it with my own eyes. Y-pipes do not gain 20hp. Try about 10-12fwhp. A b-pipe is good for maybe 2-3hp. I'm no slower at the track with my OEM b-pipe vs the two aftermarket b-pipes I've used. Muffler wise, maybe 1-2 hp. Catback as a whole, maybe 3hp. As for the UDP, I gained ~4fwhp/fwtq and drop ~.1 in the 1/4 mile.

An automatic with an intake (any style), y-pipe, catback, and UDP should make around 170fwhp with ~15.2-15.4s@90-91mph assuming a 2.3 60'.



Dave

 

Look at the difference in correction factors between his dynos. It's extreme. To get an honest comparison, the correction factors need to be within .1. Even Cattman admits that his Y-pipes don't make 20hp to the wheels.


Dave

 

UDP not only gives some power, but helps spool faster, so can give more results than just a B pipe or other small mod... i like Daves advice as a whole, and the numbers are very sound
*edit* hes right about the correction factor too, i thought it was high, but didnt know what normal was supposed to be

 

Way to knock a dose of reality into this thread. Thanks Dave.
I too have similar dynos to prove the same.

 

I know Frank - the owner of motorvate.ca

His baseline dyno was actually pretty low. Something was 'not right' with his car. By the time he got a y-pipe, a few other things must have been fixed because his y-pipe gains are quite phenominal... definetly way above average and one of a kind. As I said earlier, every car responds differently to mods. As Dave said, 10-12hp is about right for a y-pipe (at the wheels).

B-pipe is far from 8hp... and a muffler is almost as negligible as an intake which Dave pointed out). We're talking 1-3hp give or take which is nothing on a 170 - 190hp car.

 

speedemn :
the tranny cooler will help for long life for all tranny parts, as you know the high temp will kill it, so the best way to take care is making the temp goes low, the radiator is not enough for the tranny to keep good temp, so you can add a 404 tranny cooler for pepgirls $59 and your tranny will working fine and low temp on 1/4 miles, racing, etc.

DAVE: i hope i would get that times....with intake and y pipe i pulled 15.99, so i really hope to get low times.

 

Oops, forgot to say when your running your car on the track, you can do all that stuff

 

i think you should just dyno. since everyone has own opinions or results from there experience. I have all same setup, just UDP not instaleld yet, and i can fell the power gain. (no cat), for some reason though at high rmp's my car redlines quiker. not sure what mod would do that?

im gunna go to get my whip dyno'ed some time next week hopefully.

 

not good for your car Ni_Nos_Maxima

 

i hope guys on wed the news will be good....on the track. I think i will just wot the car, after brake pedal and 1500rpms technic...i think is better just wot the car.

 

i saw some threads on this forum...and i just wonder if this is true "brake torque method kill the tranny". I think the best way to launch is do a brake with 1500rpms but just for a few seconds before launch.

 

any comments

 

how the hell did you do 15.9 at the track? my best time was 17.2 with this setup....greddy catback, budget y-pipe, and cai. took out my subs, spare tire, and was riding on 18s. does that sound wrong to you guys or about right? oh and my car is automatic.

 

wow 17??? just check your altitude, temp, bla bla bla...you can make a search and see people who got 16´s and 15´s easy.

 

how much do your 18s weigh?

 

i dunno but they are heavy. i think someone said something about the altitude being bad and causing the track times to be high...? i hope thats the case, cause its sad for a maxima to be running mid 17s!!!!

 

i think so pk.....the track times are very different talking about temperature, altitude, humidity, etc...but 17? is weird....the cavalier and stratus got that times.