I had my car for MOT my rst is running cossy mag
we turned the co down from 12,8 to 8,8 we could not get it lower
:-/ but i was in luck he did not mesure the co but i also lowered the boost to 7psi
but later when i turned up the boost to 16psi
and ajusted the co up the car now makes a fuel cut
when it comes over 2500rpm :-(
could it be an ajustment problem?
Help.......

 

Ect sensor or mapsensor?

 

Hello yea this dose sound like a adjustment problem i would turn the co down again then try see if it seams to still do it and slowly keep ticking her up untill you get it just right

 

Whos chip is it running.

 

A chip by a guy called cossieclint never got a problem
all these years i have run with it change the blue water temp sensor
but with no luck cos before the co was 12.8 and could only come down to 8.8