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Help somethink wrong

SCR34M3R

By SCR34M3R,
in Engines & Forced Induction

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SCR34M3R Rising Star

SCR34M3R

Posted
Posted

well i got car tuned on monday and it was going really well they said my o2 sensor was stuffed, woke up next day and over 10psi it just doesnt pull. but it just screems, so i replaced the o2 sensor thinking it was that but still same thing. its a R33 GTS-T with power fc

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blind_elk Grand Master

blind_elk

Posted
Posted

The O2 sensor is useless when you are at full throttle, so the tuner was having an enormous lend of you. O2 sensors really only work on cruise.

As for the lack of performance > 10psi, was the PFC tuned for that boost level?

PHATGTR Collaborator

PHATGTR

Posted
Posted
well it just revs as it normally would, or sounds

Does it still run 10psi up top or does boost drop off all together?

If it is only reaching 10psi and staying there all the way to redline then it could be any number of things but I would suggest you have a wastegate actuator problem.

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