2015 NISMO Headers & Exhaust

Spartan 1771 · 05-25-2018, 07:08 AM

[QUOTE=mrogersii;3759047]Curious what results other NISMO owners experienced if they replaced their NISMO headers with aftermarket ones. Did you see a significant gain in HP and torque?

Just to be clear, there are no such thing as "NISMO Headers". All 370s come with the same headers from the factory.

I highly agree with Rusty's responses. The man knows what he's talking about. He's helped me out quite a bit over the past few years (THANKS RUSTY!!). Start with the intakes. If you want max gains, get a long tube system, such as the Z1 or the Stillen Gen 3. This will increase throttle response, add additional power and you will hear a noticeable growl under heavy acceleration. On the exhaust side, I purchased and installed a Fast Intentions cat-back last year and I LOVE it! I went with the non-resonated option with carbon fiber mufflers. I'm also running Berk high flow cats, so my Z is LOUD! Since it isn't my daily driver, I love it. If this is your daily, you may want to consider the 12" or 18" resonators.

Your other bolt-on options are:
1. Porting/polishing or upgrading your throttle bodies
2. Aftermarket / ported and polished upper and lower intake manifolds
3. Headers - Have fun installing them!
4. Cats - Go for a reputable brand. I know others who have tried to save money here and have had major fitment issues.
5. Get a tune with EcuTek or UpRev. I went for a dyno tune as opposed to uploading a canned tune or sending data logs back and forth via email. Although a bit pricy, I think it was worth it.
6. Sprint Booster - Personally I love this device, it was much more noticable prior to my tune, but it still adds responsiveness even after EcuTek
7. Lightweight pulleys - Have fun installing them!

If you're interested in porting and polishing, there is a member on here who does it for a reasonable fee. I'm running his throttle bodies and plan to have him do the same with my upper and lower intake in the near future.

Rusty · 05-25-2018, 10:27 AM

Thanks for the words.

I'm not a fan of light weight pulleys tho. I have an ATI damper.

05-25-2018, 07:08 AM	#1 (permalink)
Spartan 1771 A True Z Fanatic Join Date: Nov 2009 Location: Western Maryland Posts: 1,279 Drives: Wife crazy & 09 370Z Rep Power: 105455	[QUOTE=mrogersii;3759047]Curious what results other NISMO owners experienced if they replaced their NISMO headers with aftermarket ones. Did you see a significant gain in HP and torque? Just to be clear, there are no such thing as "NISMO Headers". All 370s come with the same headers from the factory. I highly agree with Rusty's responses. The man knows what he's talking about. He's helped me out quite a bit over the past few years (THANKS RUSTY!!). Start with the intakes. If you want max gains, get a long tube system, such as the Z1 or the Stillen Gen 3. This will increase throttle response, add additional power and you will hear a noticeable growl under heavy acceleration. On the exhaust side, I purchased and installed a Fast Intentions cat-back last year and I LOVE it! I went with the non-resonated option with carbon fiber mufflers. I'm also running Berk high flow cats, so my Z is LOUD! Since it isn't my daily driver, I love it. If this is your daily, you may want to consider the 12" or 18" resonators. Your other bolt-on options are: 1. Porting/polishing or upgrading your throttle bodies 2. Aftermarket / ported and polished upper and lower intake manifolds 3. Headers - Have fun installing them! 4. Cats - Go for a reputable brand. I know others who have tried to save money here and have had major fitment issues. 5. Get a tune with EcuTek or UpRev. I went for a dyno tune as opposed to uploading a canned tune or sending data logs back and forth via email. Although a bit pricy, I think it was worth it. 6. Sprint Booster - Personally I love this device, it was much more noticable prior to my tune, but it still adds responsiveness even after EcuTek 7. Lightweight pulleys - Have fun installing them! If you're interested in porting and polishing, there is a member on here who does it for a reasonable fee. I'm running his throttle bodies and plan to have him do the same with my upper and lower intake in the near future. Rusty and Ronin06 like this. __________________ ~Rob -DD Air Guide, Stillen G3 CAIs, 63mm Throttle Bodies, Motordyne M370, Berk HFCs, FI TDX CBE (non-res, CF), Sprint booster v3, Ecutek Dyno Tuned, and the list goes on... Last edited by Spartan 1771; 05-25-2018 at 07:11 AM.

05-25-2018, 10:27 AM	#2 (permalink)
Rusty A True Z Fanatic Join Date: Dec 2011 Location: Fayettenam,Pennsyltucky Age: 70 Posts: 35,571 Drives: 2011 Nismo GM 6M Rep Power: 2684440	Thanks for the words. I'm not a fan of light weight pulleys tho. I have an ATI damper. wideglideleon likes this. __________________ 浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html

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