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Old 02-06-2010, 10:00 PM   #1
dwntwndwntwn is offline
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Default Took my grocery getter to the dyno today...

The rpm's were off, I let off at 6k on each pull. Also the air / fuel was not being logged on the dyno, I was scanning it with my datalogger and it was at 12.5:1.

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Old 02-06-2010, 10:47 PM   #2
SoCalC55SoCalC55 is offline
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Nice numbers
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Old 02-06-2010, 11:16 PM   #3
SeanPlunkSeanPlunk is offline
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Very nice number! 12:5 to 1 is a little lean though, yeah?
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Old 02-07-2010, 07:34 AM   #4
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Very nice number! 12:5 to 1 is a little lean though, yeah?
Not really, my computer is commanding 12.0:1 and on pump gas that is what my wideband reads. The race gas being oxygenated is the reason why it was reading 12.5:1. I was getting 0* knock retard on all of my runs.
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Old 02-07-2010, 11:31 AM   #5
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Originally Posted by dwntwn View Post
Not really, my computer is commanding 12.0:1 and on pump gas that is what my wideband reads. The race gas being oxygenated is the reason why it was reading 12.5:1. I was getting 0* knock retard on all of my runs.
Interesting. For the Cobra 12:1 is considered fairly lean. Most people tuns for somewhere between 11.5-11.7:1. Congrats on the numbers though, that's much more than my old LS1 Camaro could have managed
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Old 02-11-2010, 11:51 AM   #6
enkeivetteenkeivette is offline
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Quote:
Originally Posted by SeanPlunk View Post
Very nice number! 12:5 to 1 is a little lean though, yeah?
12.5:1 is best for power as is my understanding. 11.8:1 is safer if your motor is blown.
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Old 02-11-2010, 11:52 AM   #7
enkeivetteenkeivette is offline
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Oh yeah, what kind of car?!
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Old 02-11-2010, 01:42 PM   #8
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Oh yeah, what kind of car?!
This one.
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Old 02-14-2010, 10:01 AM   #9
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Oh yeah, what kind of car?!
2004 Pontiac Grand Prix GTP CompG.

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