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Old Jul 20, 2010 | 05:02 PM
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cruzinquick
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Joined: Sep 2007
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From: AZ
Default Re: Interesting thread on MBWorld

Originally Posted by hawksview
I agree 100%.WOT was what i was looking at.We just installed a downpipe and wideband on my sons srt4 this weekend.At idle the afr was around 14.7.At WOT it was around 11.7.I know on those cars it is recommended you stay under 12 at wot.Just didnt know if that number would pertain to our motor or not
Yes that's a safe area to be in. Now take into consideration what loungn14 said. Octane!! That is very important. When I race my car is either on Torco 100 which has an octane rating of 100 or VP 109 race fuels which has an octane rating of 101. My car has 9000 miles and 90% of those mile were on race fuel. For everyday NORMAL driving then a mixture to run a 93 octane is forgiven by the ecu, but not in WOT driving. So if your tuned anything higher than 12.5-13.0 it should be mandatory to use 100 oct race gas IMO. You will have people heavily mod and still use regular pump gas. Might as well throw a match in the tank.
 
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