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Thread: LOW dyno numbers?
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10-25-2008, 04:46 PM #1
LOW dyno numbers?
I have a 06 GTO with an M6, and recently took it to a friends dyno-jet where it put down 347.73RWHP and 358.30RWTQ, I have pacesetter coated LTs, cat delete, 3in. off road mids, LMII mufflers and a K&N CAI. Now I do have nitrous(not on this particular pull) so this is supposedly a nitrous tune, but I was figuring it should have been closer to 36XRWHP/37XRWTQ. With a Zex 125hp. wet kit it put down only 427RWHP and 479RWTQ which I figured should be closer to 44X RWHP/ 49X RWTQ. Anyway, I'm only running a static 20deg. timing, and have my NGK tr6 plugs gapped at .037, the temp. was 62deg. F. with humidity around 14%. My AFR was a little rich at 10.4 across the board(on N20) from 3K-6200RPMs. Any suggestions? I'm hoping LS2tuner will give me some insight being the N2O guru he is.
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10-25-2008, 04:49 PM #2
Dumb question but did you get your car tuned after the headers?
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10-25-2008, 08:12 PM #3
yep, street tuned.
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10-25-2008, 09:53 PM #4
sounds like your nitrous tunes killin your N/A power and dyno numbers...you have your dyno sheet to post?
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10-26-2008, 04:39 AM #5
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Tune.
Dyno numbers are over rated.
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10-26-2008, 05:55 AM #6
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10.4 is more than a little rich. Get the AFR where it needs to be and I bet your numbers will be spot on.
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10-26-2008, 07:34 AM #7
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10-26-2008, 02:39 PM #8
I have the dyno sheet but I don't have a scanner, I guess I could take a pic and post and see how that works.
2006 impulse blue G.T.O
Iron Block 408
Cam
Pacesetter ceramic coated L.T.s
LMII exhaust
K&N CAI
Ported TB
Custom Tune
FAST 90
ZEX 125hp wet shot
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10-26-2008, 03:40 PM #9
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10-26-2008, 06:47 PM #10
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10-27-2008, 11:32 AM #11
My N/A AFR is:
RPM 2500-- 3000-- 3500 -- 4000-- 4500-- 5000-- 5500-6300
AFR 14.0-- 13.5-- 13.14-- 12.8-- 12.5-- 12.1---- 12.0
kind of a crude table but you get the jist, I know I'm running rich but I do need a little extra fuel N/A when I do spray, it seems the the N20 kit fuel jets over compensate, so I guess I'll add maybe 1 or 2 degrees of timing and lean it out to around 11.8ish on the N20 side and try that.Last edited by 05gtoautoX; 10-27-2008 at 11:37 AM.
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10-27-2008, 11:34 AM #12
N20 AFR is:
RPM 3000-6100
AFR 10.16 straight across the band
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