hi
I'm having a problem with my 240kw Barra
she drives good and changes gears normal up to 3 to 4k runs 6psi
has no folt codes
then when it hits 3 to 4k revs the motor splutters and the 6 psi turns to 12 psi well the gauge goes up to 12
then the motor runs rough and and smells lean I don't get an engine light come on then I turn it off and restart it and it runs normal
I've replaced the plugs twice the coils 2 tps sensor turbo solenoid
if you could help would be great thank you in advance