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I think my 01Z has an overlly rich condition at wide open throttle.
I'm sure this has been gone over before (didnt find anything in a search). I was wonderin what you guys that had this problem did to solve it? My only mods on the induction side are a 02 air box lid, a K&N filter, and removed the screen in the MAF. Any sugestions, help my bruthas.

:cheers: Z.F.
 

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This condition is common when you make the LS6 breath better. I believe what happens is the PCM adds fuel to richen the mixture to compensate for the new air box but goes too far (I have an 01 with a Halltech T1 and runs rich also). There's a much more technical version of my answer floating around somewhere but thats it in a nutshell. The fix is to get a MAF Translator to allow you to lean it out, gaining a few ponies in the process.
 
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