Is it really worth putting a Cold Air Intake on 370z and what HP gains

gbrettin · 01-26-2012, 11:57 AM

It's interesting seeing the pro/con views in this thread. Worth the read imo.

gsxr750 · 01-26-2012, 12:57 PM

I 'm using the motor trend nismo to the base model comparisin , to show what little effect a marginal HP increase, in this case none.

Dyno runs are one thing to show performance and I would agree that a 50-100 hp increase would definitly be felt by the driver, but with the marginal 5-10HP from an intake kit, it may not even provide any better numbers than stock if it were tested on the street for 0-60 , 1/4 mile and top end. Test results may even prove worse.

Another thing to point out is that once a modification has been made to the exhaust or intake, the engine requires a new engine map to installed by either a laptop with a proven map for your specific geographical location or a manually adjusted map, calibrated with a dyno and a laptop. In order to take full advantage of the mods.

I know the ECM will relearn itself, as you drive it , but it will not optimize for the best peformance possible, when compared to a dyno/mapping adjustment.

Cmike2780 · 01-26-2012, 01:13 PM

Quote:

Originally Posted by gsxr750

I 'm using the motor trend nismo to the base model comparisin , to show what little effect a marginal HP increase, in this case none.

Dyno runs are one thing to show performance and I would agree that a 50-100 hp increase would definitly be felt by the driver, but with the marginal 5-10HP from an intake kit, it may not even provide any better numbers than stock if it were tested on the street for 0-60 , 1/4 mile and top end. Test results may even prove worse.

Another thing to point out is that once a modification has been made to the exhaust or intake, the engine requires a new engine map to installed by either a laptop with a proven map for your specific geographical location or a manually adjusted map, calibrated with a dyno and a laptop. In order to take full advantage of the mods.

I know the ECM will relearn itself, as you drive it , but it will not optimize for the best peformance possible, when compared to a dyno/mapping adjustment.

You are correct, and often times, that's exactly what most people do. Get an UpRev tune to adjust the A/F ratios once all the bolt on's a done. Aside from the exhaust, this is where the Nismo picked up a few more ponies over the regular Z, the tune. For just an intake though, its not really necessary because the ECM can compensate for the increased air flow within the stock maps. It's around $500-$600 for the initial UpRev license.

Pelican170 · 01-26-2012, 03:56 PM

Quote:

Originally Posted by gsxr750

I 'm using the motor trend nismo to the base model comparisin , to show what little effect a marginal HP increase, in this case none.

Dyno runs are one thing to show performance and I would agree that a 50-100 hp increase would definitly be felt by the driver, but with the marginal 5-10HP from an intake kit, it may not even provide any better numbers than stock if it were tested on the street for 0-60 , 1/4 mile and top end. Test results may even prove worse.

Another thing to point out is that once a modification has been made to the exhaust or intake, the engine requires a new engine map to installed by either a laptop with a proven map for your specific geographical location or a manually adjusted map, calibrated with a dyno and a laptop. In order to take full advantage of the mods.

I know the ECM will relearn itself, as you drive it , but it will not optimize for the best peformance possible, when compared to a dyno/mapping adjustment.

I think motortrend is maybe the only place that has numbers like that. Everything else ive ever seen shows them even... Besides, I dont think motortrends numbers are on point with most thing from what ive heard...

If motortrend gave the nismo a 4.6 0-60, what did it give the base model for numbers?

http://www.motortrend.com/roadtests/...o_370z_review/

This shows the non nismo at 4.7...
http://www.motortrend.com/roadtests/...0z_first_test/

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01-26-2012, 11:57 AM	#1 (permalink)
gbrettin A True Z Fanatic Join Date: Oct 2010 Location: Portage, MI Posts: 2,304 Drives: Tricycle Rep Power: 589452	It's interesting seeing the pro/con views in this thread. Worth the read imo.

01-26-2012, 12:57 PM	#2 (permalink)
gsxr750 Enthusiast Member Join Date: Jan 2012 Location: west Posts: 443 Drives: 2012 370z man. sport Rep Power: 15	I 'm using the motor trend nismo to the base model comparisin , to show what little effect a marginal HP increase, in this case none. Dyno runs are one thing to show performance and I would agree that a 50-100 hp increase would definitly be felt by the driver, but with the marginal 5-10HP from an intake kit, it may not even provide any better numbers than stock if it were tested on the street for 0-60 , 1/4 mile and top end. Test results may even prove worse. Another thing to point out is that once a modification has been made to the exhaust or intake, the engine requires a new engine map to installed by either a laptop with a proven map for your specific geographical location or a manually adjusted map, calibrated with a dyno and a laptop. In order to take full advantage of the mods. I know the ECM will relearn itself, as you drive it , but it will not optimize for the best peformance possible, when compared to a dyno/mapping adjustment.