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Old 05-06-2009, 09:53 PM   #1
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Join Date: Feb 2007
Location: Byron, Illinois
Posts: 157
Car: 91 camaro RS
Engine: superchargered 350
Transmission: t56
Axle/Gears: 4.10

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recommended afr?
I am going to tune this weekend and would like to know everyones opinion on what afr I should try and target at:

-idle
-part throttle (driving around town)
-WOT

I know i should ultimately aim for what the engine likes best but my tuner usually does boosted cars, which requires a richer AFR. he thougt that about 14-15 afr for idle, about 15 for part throttle and about 13.0-13.3 for WOT. My setup is in my sig below, so look at that and tell me what you think. will be using 91 octane.

We will be using the wideband readings for tuning, not BLM readings.

thanks
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-350/Holley Stealth Ram/AFR eliminator 180cc heads/Comp roller cam/Hooker Super-comp long tube headers/4" Mufflex exhaust system/Speedpro flat top pistons/BBK 58mm throttle body/30lb injectors/t56/Auburn limited slip/4.10/Paxton supercharger
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Old 05-07-2009, 04:35 PM   #2
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Location: wisconsin
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Re: recommended afr?
No emmishions stuff. E10
these are my readings on WB.
I idle at 13.0 OL
off idle I am CL at 14.3(STOICH)
AE varies based upon rpm 10.0/1 to 12.5 is what I see
PE varies by RPM 12.7 to 12.3
92 octane
I have no knock.
I think 13.3 may be a bit too lean?
Last edited by Ronny; 05-07-2009 at 04:42 PM.
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Old 05-07-2009, 04:35 PM
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