2.0L LSJ Performance Tech 205hp Supercharged SS tuner version. 200 lb-ft of torque.

good afr??

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Old Aug 13, 2009 | 04:11 PM
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bulletpound's Avatar
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good afr??

is this a good afr for my mods i have.

WOT 11.8-12.2 with no knock and 22* timing and 17.5 psi.

car pulls really dam hard torq steer in 3rd

2.8
60s
colder plugs
ottp h/e
ottp dual pass
opt.b
vibrant header
vibrant dp
vibrant cat-back
custom toon
zzp 3inch intake
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Old Aug 13, 2009 | 04:15 PM
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22 might seem to be high advance for some, but if it does not knock then it sounds like it will be fine.

After several hard pulls you might get some detonation.

Anything all the way to 10.5 AFR is acceptable at High load.
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Old Aug 13, 2009 | 04:15 PM
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nothing wrong with that.
get yourself an egt gauge and youll have a better idea of how your engine is liking it
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Old Aug 13, 2009 | 04:30 PM
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egt gauge whats that?? i check everything on the aeroforce.

i did a few back to back 2,3,4 gear pulls ( 3 am empty highway ) and zero knock, iats2 would drop very dam fast, max iat2s i saw was 130, and 17.5psi end of 3rd gear holding 12.0 afr flat. 12 afr isnt too lean that i would **** up my ****??
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Old Aug 13, 2009 | 04:35 PM
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Originally Posted by bulletpound
egt gauge whats that?? i check everything on the aeroforce.

i did a few back to back 2,3,4 gear pulls ( 3 am empty highway ) and zero knock, iats2 would drop very dam fast, max iat2s i saw was 130, and 17.5psi end of 3rd gear holding 12.0 afr flat. 12 afr isnt too lean that i would **** up my ****??
not too lean. EGT = exhaust gas temperature. these pistons can handle pressure fine, its the heat that kills them. you can monitor your EGT's with that pyrometer gauge
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Old Aug 13, 2009 | 04:38 PM
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ooo thanks, after a few pulls it would affect the egt to pistons or i would b fine with 1 or 2 pulls? just not alot of back to back?
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Old Aug 13, 2009 | 04:52 PM
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Back to back kills..
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Old Aug 13, 2009 | 08:12 PM
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Originally Posted by brian mp5t
back to back kills..
qft.
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Old Aug 14, 2009 | 07:44 PM
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Gene Culley's Avatar
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From talking to Vince while tuning my car recently 11.8-12.2 is lean. 11.5 is preferred.
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Old Aug 15, 2009 | 12:14 AM
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i have seen alot of ppl run 11.8-12 for a while without any problems,
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Old Aug 15, 2009 | 12:22 AM
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Originally Posted by bulletpound
i have seen alot of ppl run 11.8-12 for a while without any problems,
The old...I smoke, but don't have cancer argument.
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Old Aug 15, 2009 | 10:15 AM
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Originally Posted by ebristol
The old...I smoke, but don't have cancer argument.
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