FCO on a 60trim?

aye mate

Hiatus over.
Mar 30, 2005
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I know FCO isn't measured by boost pressure but wouldn't FCO come on earlier with a 60trim than with a stock turbo? With a stock AFM, Stock exhaust, Stock fuel system. This is not my set-up it was just a question that popped into my head. Thanks everyone.
 

GrimJack

Administrator
Dec 31, 1969
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The usual answer - maybe. It depends on too many factors to predict. If the restriction that is causing boost to build up is the head, or the intake piping, or something like that, then no. If it's the turbo itself, then yes.
 

Idealsupra

Supramania Contributor
Mar 31, 2005
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you WILL have a lower fuel cut with a 60 trim.... it will obviously vary per car... for an example my fuel cut with the stocker was around 13-14psi... with the 60 trim it was 10psi....

obviously air temp and density are factors as well...but as a general rule of thumb...since the 60 trim will be pushing MORE air...the fuel cut proximity will be decreased....