idle searching on crome

banzai

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turbo b16a tuned with crome

Having some trouble with my idle on my car. It runs way lean (19:1-20:1) and then drops back down to around (14:1-15:1) consistently, like its trying to run stoich or rich but then just ends up running extremely lean. John (maker of crome) and others are trying to figure this out on the pgfmi boards, but I was curious to see if anyone has heard of this problem or experienced it. It seems like throught the rest of the powerband it runs just fine, but the idle is way choppy. Any feedback is appreciated, thanks.
 

Ravage70

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why not run uberdata?
are u running itbs?
 


banzai

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we have tried uberdata on other cars and crome has far less hiccups than uberdata. The car is sound everywhere else on the rpm band, but at idle its choppy. I'm unfamiliar with the acronym itbs, whats it stand for?
 


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