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g37 340+ whp

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Old 12-12-2011, 09:51 PM
  #16  
kaos2774
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I have a print out I can take a picture of and post when I get home. john from HB Cobb did the custom tune when he was with HB speed
Old 12-13-2011, 01:54 AM
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kaos2774
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Sorry attaching files is not working. Clicking on the paperclip icon attachment and nothing happends? Not a big surprise here..But My HP is 321 not 324,
Old 12-13-2011, 02:00 AM
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jamesshifflett
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^Post the pic to photobucket and then put the photobucket link in your post. ALOT of people would like to see the dyno graph of that output.
Old 12-13-2011, 02:13 AM
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mw09g37
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i am!

at the flywheel.... ha ha

nah, I think we have too much power train loss to ever get that without modifying or upgrading some of the engine components itself: bore it out, sleeved, stroker, flywheel upgrade. not just from bolt-ons. I was able to get 280HP out of a 1.8L GSR engine without FI so it's not like it's imposible. there are NA tuners out there.

I think most people with every bolt on option plus tune don't get passed 330 (may come close)... i mean unless it's some BOMB-*** tune with like gen 3s, test pipes, full exhaust, maybe a lightweight flywheel... you probably could.

but I think it's safe to say making up an almost 50-60HP deficit is a pretty tough feat with just bolt-ons. like I think the intake and the test pipes bring the most out and that's only like 20, then with a tune to like 30 hp or something...


http://www.the370z.com/engine-drivet...art-video.html

this guy has Stillen long tube intakes Stillen Headers Motordyne ART Pipes ,and Stillen Exhaust + tune and got 324.

Last edited by mw09g37; 12-13-2011 at 02:28 AM.
Old 12-13-2011, 02:28 AM
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kaos2774
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Old 12-13-2011, 02:28 AM
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WARAT
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Does anybody else run the motordyne intake manifold with all other bolt ons and tune?
Old 12-13-2011, 05:48 AM
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mikelr
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I'd say considering you were over 300whp on that dyno before the tune with only the mods you have listed that the dyno is VERY generous with it's readings.....
Old 12-13-2011, 06:17 AM
  #23  
G37Sam
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I know of a dyno shop locally that claims to measure bhp from his chassis dyno (don't ask me how) where modded G37s dyno'd 330+ hp all day.

Dyno numbers should not be taken religiously, they're a before/after comparison tool nothing more.
Old 12-13-2011, 09:14 AM
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RISKY GUY
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No way 324@ the wheels.
I barley cracked 309whp with every bolt on except headers & tune.
You sure it was a 4th gear pull.?

I had 325whp pull done in 5th gear, so it was not a acurate #.
Old 12-13-2011, 09:55 AM
  #25  
G37Sam
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An example of dyno numbers taken religiously

Originally Posted by RISKY GUY
No way 324@ the wheels.
I barley cracked 309whp with every bolt on except headers & tune.
You sure it was a 4th gear pull.?

I had 325whp pull done in 5th gear, so it was not a acurate #.
You do know your diff also has a gear ratio reduction right?
Old 12-14-2011, 11:26 AM
  #26  
indyn
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it might be possible, this guy is almost close to it and his car is not fully tuned.

Going back on 2 dyno tomorrow (Dynapack & Dynojet) - Nissan 370Z Forum
Old 12-14-2011, 12:29 PM
  #27  
san~man
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304.7 stock, LOL. That's assuming you have less than 10% drivetrain loss, which essentially is impossible.
Old 12-14-2011, 03:49 PM
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Ibanez540r
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Originally Posted by san~man
304.7 stock, LOL. That's assuming you have less than 10% drivetrain loss, which essentially is impossible.
I agree the dyno is generous, but I think the way he explained it "Stock" on the sheet means stock TUNE with all the bolt ons. So, the dyno sheet is showing three different tunes with the same bolt ons. SO all the bolt ons resulted in 304 and the better tunes got him into the 320+
Old 12-14-2011, 03:58 PM
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kaos2774
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Originally Posted by Ibanez540r
I agree the dyno is generous, but I think the way he explained it "Stock" on the sheet means stock TUNE with all the bolt ons. So, the dyno sheet is showing three different tunes with the same bolt ons. SO all the bolt ons resulted in 304 and the better tunes got him into the 320+
Yes... feel free to call John at Cobb Ca. He is the only one that can answer these questions.
Old 12-14-2011, 04:04 PM
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The Jewbag
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Why call Cobb when it really doesn't do much but adjust A/F ratios....all these "tunes" are a complete waste until VVEL is cracked


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