VQ37 (370Z) Before and After dynos

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Jul 20, 2009 | 04:25 PM

#31

delion21

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From: Orlando, FL

So are you saying Cobb is a waste of time the the stock ECU does better with your mods?

Quote:

Originally Posted by RISKY GUY

I have a g37S 5peed automatic.

Fi cat back/fI H.F.C.'S/Stillen stage 3.

I had cobb installed with stage 2 map, but for some reason the car responded much better with the stock map.

1st pull 310WHP.
2nd pull 305WHP.
3RD PULL 308WHP.

AFTER REMOVING COBB STAGE 2 & REINSTALLING BACK TO STOCK MAP.

1ST PULL 318WHP
2ND PULL 315WHP.
3RD PULL 325WHP.

Jul 20, 2009 | 04:27 PM

#32

Supergoji

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Joined: Nov 2008

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he may have developed less peak power but was there more power and torque under the curve with the cobb map? because that would be better.

Jul 20, 2009 | 04:33 PM

#33

G37Rider92649

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From: SoCal...OC..714..

Quote:

Originally Posted by RISKY GUY

Thank You for Proving my own Point!!! But I seee....interesting....

Get a non pre-loaded map ecu re-flash by a tuner and see what happens now!!

Jul 20, 2009 | 04:42 PM

#34

philter25

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From: Maryland

Quote:

Originally Posted by philter25

Same with the exhaust. While the cars are very similar, they arent identical. Theres what, an 8 inch difference in the wheelbase and a 10 inch difference in length or something like that? Exhaust length might be different, the bends might not be identical, and the location of sensors might not be identical. Also, their calibration and readings might not be the same due to very slight differences in the exhaust. Same with their headers, cats, mufflers, etc. While I think most of the parts may be very similar, if they arent identical, they can produce slightly different results.

Quote:

Originally Posted by oomikeyboy

maybe its because the Z's wheelbase is shorter, thus making the exhaust shorter? And that way it affects the engine or something. or maybe i'm just rambling.

You arent rambling. I think I even read an article about a company who was designing a complete aftermarket exhaust, from headers back, and depending on where the placed the Y pipe downstream from the headers produced significant differences in whp.