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VQ37 (370Z) Before and After dynos

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Old Jul 14, 2009 | 11:57 PM
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VQ37 (370Z) Before and After dynos

Got this over from the370Z from FI new TDX exhaust..

Here is where we are at so far:

Baseline (Stock)
Run 1- 281.94 RWH / 241.25 RWT
Run 2- 276.51 RWH / 241.52 RWT
Run 3- 284.12 RWH / 240.89 RWT
Baseline Average: 280.86 RWH / 241.22 RWT



F.I. TDX Cat Back 12" Resonators / Stock Cats
Run 1- 300.81 RWH / 251.08 RWT
Run 2- 301.62 RWH / 252.11 RWT
Run 3- 301.30 RWH / 253.89 RWT
F.I. TDX C.B. 12" Res. Average: 301.24 RWH / 252.36 RWT



F.I. TDX Cat Back 12" Resonators / F.I. Resonated Test Pipes
Run 1- 308.99 RWH / 259.05 RWT
Run 2- 310.24 RWH / 258.32 RWT
Run 3- 305.37 RWH / 258.70 RWT
F.I. TDX Cat Back 12" Res. / F.I. R.T.P. Average: 308.20 RWH / 258.69 RWT



F.I TDX Cat Back 12" Resonators / F.I. HFC's
Run 1- 304.35 RWH / 258.33 RWT
Run 2- 304.19 RWH / 258.25 RWT
Run 3- 305.79 RWH / 258.50 RWT
F.I. TDX Cat Back 12" Res. / F.I. HFC's Average: 304.78 RWH / 258.36 RWT

During the dyno runs of the HFC's & R.T.P's I started the think as to why it wasn't making more power. Then I reviewed the numbers and realized that they were pretty standard as far as gains go. Remember that this car has stock air boxes and stock air filters. The car is only taking in so much air so it can only let out so much exhaust. Now, I am confident that the HFC's and R.T.P.'s will play much more of a part when a good cold air intake setup is on the car.

Last edited by G37Sam; Jul 15, 2009 at 12:17 AM.
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Old Jul 15, 2009 | 12:14 AM
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Old Jul 15, 2009 | 12:20 AM
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I wish we got 20hp and 11lbs torque from a cat-back....
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Old Jul 15, 2009 | 07:39 AM
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Great numbers
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Old Jul 15, 2009 | 08:32 AM
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wow sick gains. and thats without an intake.
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Old Jul 15, 2009 | 08:52 AM
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yeah I posted this a while ago (not this specific one) but in general their cars are that much more responsive to mods....
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Old Jul 15, 2009 | 02:58 PM
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Originally Posted by SOLISIMO
yeah I posted this a while ago (not this specific one) but in general their cars are that much more responsive to mods....
Why why WHY??????!!!!!!!!!!!
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Old Jul 15, 2009 | 03:43 PM
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Damn nice numbers for sure.
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Old Jul 15, 2009 | 05:24 PM
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Are they really MORE responsive?
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Old Jul 15, 2009 | 08:00 PM
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Originally Posted by G37Sam
Are they really MORE responsive?
I'm thinking the same thing? The only thing that I can think that would be attributing to the positive gains in mods is ECU.. But are our ECU's that different?
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Old Jul 15, 2009 | 08:12 PM
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Do you have the graphs? Does it show gain across the entire RPM range?

The numbers don't mean much if there's drop off but produce +20 only at redline.
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Old Jul 15, 2009 | 08:17 PM
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20hp and 10lb-ft from a cat-back?
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Old Jul 15, 2009 | 09:37 PM
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Graphs up top Danny

Originally Posted by ucla bruin
Do you have the graphs? Does it show gain across the entire RPM range?

The numbers don't mean much if there's drop off but produce +20 only at redline.
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Old Jul 15, 2009 | 09:45 PM
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Go over to the370z.com and look at their gains, I cant explain it but with full exhaust, headers, hfcs, and exhaust they are close to 350
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Old Jul 15, 2009 | 10:57 PM
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WTF!

hopefully some smart people can figure this out
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