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I recently built a forged 4efte on speedvision cams but no matter what I do it runs rich. I changed the injectors back to the stock ones checked the map sensor stock ecu and even my greddy ultimate and it still reads rich. Any idea on what's causing the problem?

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On 6/9/2020 at 3:33 PM, Sobshotta said:

I recently built a forged 4efte on speedvision cams but no matter what I do it runs rich. I changed the injectors back to the stock ones checked the map sensor stock ecu and even my greddy ultimate and it still reads rich. Any idea on what's causing the problem?

Rich at startup? Rich while running? Cut some of the fuel from the fuel VE table. Who tuning your car?

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How old is the wide band or are you using a gas analyser. The speed vision cams do promote high rpm power with cam overlap this will impact your low rpm afr, so trimming off the fueling might be what is necessarily. 

What turbo are you running and rpm range.  

 

Edited by Sam44
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