What's the average gains that people are getting from NISMO exhaust?
 

I just wanted to know what gains people are getting from the NISMO exhaust b/c i am interested in getting one thx :D

About 6 hp

and how bout the Injen exhuast?

Which one get's the best gain and sounds good?

Sound is subjective but alot of people like the Nismo. And according to Sport Magazine Stillen had the best gain.

Ive been told my nismo exhaust sounds like a porsche

I have had both the Injen and Nismo.

The SportZ information on the Injen is old, that is from the Injen Angle tipped system, the current system is the straight tip with built in restrictor silencers in the back box.

On my car the Injen had a drop in torque I could feel up to 3k, especially in 6th on the freeway. Also at these low speeds it was boomy, so the car felt slow and loud. When I put the stock system back on it felt like I gained quite a bit of power. Top end power might have been around 5 at best but it came on so late, it was not all that useful. Maybe for a drag car that spends all it's time in high RPM but I think there are better choices for drag than Injen's 50mm, no crossover, takes forever and a day to get them straight system. But it looks bad a$$.

Last night on the way home I had the windows down and my Nismo was growling like a freaking tiger. It sounded awesome going up the freeway ramps. Power gains are there throughout the range so it's an improvement from stock all the way up. For the most part it is quiet around town and with the windows up, it's a bit faint when taking it easy, rev the sucker up though and it's like it switches on the afterburners. Just amazing for the money. I have had the system on the car for 6k miles and it's still sounds perfect to me every day.

Just for a comparison, Injen, Borla and Nismo's are all roughly similar in price, but look at the classifieds and compare how many people are selling or have sold used systems of each. I think you will find the Injen shows up for sale far more than any other common system.

Chris

Notice any resonating sounds in the car while cruising at 75'ish on the freeways that I have heard some mention? Any issue with that?

From what I've heard, the Nismo is everything you said. It would be my choice.

I have had my Nismo on for 3 days now, which I installed with Kinetix hi flow cats. Everything HyperSprite said is accurate with my setup as well...

At 75, if you just maintain speed (no acceleration) there is a noticable drone, although very faint. If you accelerate even a bit, the Nismo makes itself known. Keep in mind though, that this is with hi-flow cats, so if you have stock cats it will probably be a bit different (ie more quiet)

With the windows up at 75 on a flat you can hear the exhaust but it is very mild, I only notice when I have the music completely off, even low volume music covers it up entirely. With the windows down, it's more noticeable but it's never annoying or overpowering, but constant. Keep in mind I am still using stock cats.

I do know of one ZR guy in NorCal that sold it to get the Stillen because with the Crawford cats, plenum and pop charger it was just ot loud for every day top down driving. He is much happier with the Stillen.

All of that said Chad68, I'll be glad to take you for a drive and let you hear it for yourself. That is really the best way to buy a system anyway. Check the NorCal section here, I will be at both the Carmel event on the 17th and Toys for Tots things on the 18th this weekend or we could hook up some other time if you're interested.

For anyone else, I recommend the same thing, find someone in your area who has the systems you are interested in and ask them give you a ride. Listening to a system as it goes by is not good enough, the Injen sounds awesome driving away from my house.

Chris

Ok, I was leaning towards the Injen, but now I'm sold on the Nismo :D

copy-freakin-cat !!! My nismo will be here monday :D

Nismo CAI and exhaust should be good for mid-upper 13s, no? At bradenton...which is a pretty decent track.

Pre exhaust dyno: air temp 66 deg:

235hp/229lb-ft

Post exhaust dyno: 2 hours later, air temp 71 deg:

242hp/227lb-ft

This was before I had any other mods whatsoever

6hp
 

I got 6 hp from my Nismo CAI, and 6 HP from my Flowmaster muffler only.
Awesome sound better than the Nimso IMHO, the same HP as the nismo and cost $110.00 installed, with my stock tips.

Saved $800.00.....

So!!! :p You need to nail a 13.7 or you are teh suck :D

ur trap was kinda low. I thought it was a 102 or so?

Yeah it was, but then the next day I checked my tire pressure and noticed that the pass. rear tire was 15 psi :eek: I think that may have been the culprit....now I gotta go back and make a few more passes

6 HP for $1K, uhm no thanks!

But then you probably paid $65 for your Nismo Oil Cap and that was worth 0 hp and weighs more than stock.

The Nismo exhaust can be found for less than a grand and no exhaust for the Z is going to get you much in the power to cost area. The stock system although smaller in tubing and lacking mandrel bends is not all that restrictive. The Borla gets 8 hp but cost less and had a smidgen less torque, the Stillen gets 8 but weighs and cost more.

If you want low cost (relative to other Z parts, not chevy 350 parts) performance, look at the MD 5/16 plenum spacer and iso thermo gasket, so far that seems to be the best bang for your buck mod for under $300 but it wont make your car sound any faster and it wont really be any thing to look at either.

Chris

you're kidding yourself if you think the only reason people have when buying an exhaust setup is the power it frees up. :icon18: