FI vs. stock NISMO exhaust, In for a penny...
 

I am planning on getting a FI exhaust as I have a suspicion that there will be a performance boost over the stock NISMO as I can't find any comparisons here or anywhere else.

My question is if you were in this situation, would you go ahead and get the FI HFCs as well since the car will be in the shop anyway? I can afford it, and I figure in for a penny, in for a pound.

Also, I am planning on installing a Stillen supercharger at the end of the summer, so I am laying the groundwork for that.

Thanks for your feedback!

I can't see a reason why you wouldn't go ahead and install them at the same time. Should be a labor cost savings, although I'm not sure it will be much.

~ 9 HP with the Nismo.
~20 With FI.

Stock cats.

I gained a little over 30HP with the mods in my sig. Not to mention how awesome the F.I. + HFC combo sounds.

any aftermarket exhaust will show performance gains over the stock nismo cbe. the nismo cbe doesn't really gain you much power vs the regular stock Z cbe. it just sounds a little different really. the extra nismo HP comes fro mthe tune they put on it.

you can not go wrong with any product from fast intentions. if you want even bigger gains then dropping the cats will provide it. HFCs wont show as big of gains but will help along with give you a great sound as well.

my first set-up was FI non-res test pipes and FI non-res CBE. a bit much for most but removing the cats will help gain more power. if you're going with a supercharger the FI will also help you add HP there as well.

I've noticed gains on the FI exhaust however the Nismo does make really good power. Here's a dyno run or a 2014 with the Nismo R tune exhaust:



This one has headers and FI exhaust:



Both vehicles have Z1 headers installed

I assume Nismo R tune is not the same as Nismo stock.

I did not know it was called R Tune. I have heard of R Tune CAI, but not of R Tune exhaust. I learn something new everyday.

The S tune (R tune?) is NOT as good as the Nismo OEM H-pipe in terms of power.

Most gains will come from swapping out the cats with either HFC's or TP's.

I don't know what the FI exhaust is going for, but my guess is that if it's, say, a few hundred more than someone's used OEM Nismo H-pipe cat back, the gains/sound will only justify the price differential if you have money to burn.

If I were you, I'd just get the HFC's.

From all the responses I will go ahead and get the FI cat back exhaust and the Resonated HFCs replacing the stock NISMO components.

As a little background as to why I am doing this; I test drove both BMW M4s and Corvettes this last summer and decided to keep and boost my Z. The only thing that I really loved about either were the great exhaust tones.

Also, I am doing an Uprev tune, so I will see if they can do a dyno before and after the exhaust install.

Stay tuned!

Nothing but FI

Fixed

Hmmmmmm... I disagree... The S-Tune WILL for SURE make more power than the OEM Nismo exhaust
I have an S-tune exhaust. It's much better than the OEM Nismo, much bigger piping. 2.25", but most other aftermarkets are 2.5"

What can one do to achieve awesome sound without changing the whole exhaust? Will adding HFC's or Test Pipes to my stock Nismo exhaust increase the groan?

When ya stall the car starting off at a light with the radio turned up rocking to some music, the exhaust is just too dang quite. Just sayin.

Dynos? I found virtually no gains over TP's alone.

However, I don't have a clear comparison of standard, S-tune, and Nismo H with cats or same replacement for cats...

This is the most incorrect/misleading thread I have seen in a long time. S-Tune makes more gains then the OEM Nismo?! There seems to be a lot of confusion about what exhaust is what and a lot of people are using many different names for the same thing.

Stock OEM Z, Y-Pipe design, what the base and sport package come with.
2.4" Y pipe
Cross Section Area 3.52 sqin

S-Tune Nismo, Y-Pipe, not found on a Stock Nismo 370Z
2.4" Primary pipes, joining into a single 2.5" y-pipe, then splitting back to two 2" pipes, through two resonators which stay 2" inside then back up to 2.4" out the back and through the muffler.
~5 whp stock OEM exhaust.
Cross Section Area 3.97 sqin

OEM Nismo, "R-Tune", H-Pipe what comes on a Stock Nismo from the dealer.
1.75" Primary pipes that stay true dual throughout the exhaust. They increase to about 2.25"-2.3" later on down the pipe run near the mufflers. There is a H-configuration crossover near the engine.
~10 whp over stock OEM exhaust
Cross Section Area 4.8 sqin

FI Exhaust
2.5" X-pipe
~20 whp over stock OEM exhaust
Cross Section Area 9.8 sqin

IMO the biggest concern is cost a used good condition Nismo exhaust can be had for 500. A FI exhaust will be hard to find used and a new one will set you back over 1,200. For a difference of about 10 whp.

Got my Nismo for $250 locally, hard to justify that much more money for even 20whp.

You can't go wrong with that combination. If you have any questions please let me know.

- Kevin

Resonated HFC's or resonated TP' or LTH's.

Hi Kevin...About to pull the trigger, so I sent you an email with some questions.

So the Nismo exhaust offerd through Nissan parts department for Lots of mula,the same as they put on stock Nismo models?

No, that's the s tune

Hi Kris, I am looking into purchasing a 370Z Nismo Tech 7AT like yours.

Just wondering, did you ask UpRev to also tune the transmission to improve shift speed? If so, how noticeable is it, and how do you feel it will affect the durability of the transmission over time?

As for the performance tuning, did you do it remotely (without dyno) or with dyno runs?

Thanks in advance...

Thread is 1.5 years old. KrisL last activity on the forum - 04-15-2015 04:37 PM. I do not think your chance of getting a response is good.

Those damn kids.

Ha well he may not answer as this thread is super old but I have a z with 7at and went ecutek route with Seb a specialty z just recently. The shifts feel good and seems like there is less hesitation on what gear to choose at lower throttle / cruise. Oem had kind of a spot on decel when it would do a shift down then back up like a 2-1,1-2 shift if you were just very light on throttle like slow cruise down residential street. It doesn't "bang gears" or anything like that and is still great for street driving, just maybe slightly and very slightly if that a more positive shift.

As for wear, well in theory the clutches should last longer as they are engaging sooner and have less slipping (easing into the shift). Other car lines that have the dual mode normal and sport for their shifting will last longer in sport mode for the same reason. Think of it as slipping the clutch on a manual vs letting it out quicker and engaging sooner. Taken to the extreme either way one will burn out the clutch and the other outs more stress on the gears but find the right balance and they will last a long time. Personally I think the autos with only 1 mode always error on the slip side as customers also persieve anything positive / harsh as wrong.