Is the optimum A/F ratio different for different turbo?


For example only, with a aftermarket ecu, cams, downpipe, exos, 21psi boost, strengthened internals but still a 2L block...below figures might not be correct coz I am just stating a assumption....

Stock Turbo 16G - 11.4 a/f at 7.5k rpm

Upgraded Turbo 20G - 11.4 a/f at 7.5k rpm

Upgraded Turbo 25G - 11.0 a/f at 7.5k rpm

Or can we remain 11.4 a/f til 7.5k rpm for all turbos provided the fueling is enuff..

Please advise....

 

There is no ideal a/f ratio - the tuner adjusts the a/f ratio to match the individual car based upon many variables and condiserations

Generally, on most pump gas evos a low 11 / 1 ratio is safe and prudent

 

This is 100% correct

 

Thanks AL!

Got it....