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Mine is running a wideband and doesn't go above around 11.8 - 12.0 on wide open throttle....

mainly around 11.0 - 11.5 range
 
My car is running really lean and need to turn the fueling up, any ideas?



What AFR do you run??

Cheers


most lean running is caused by under reading MAF.
how are you judging yours is lean?

12:1 is usually best power, but common to run a bit richer for cooling issues.