boost creep

[kandt]

i keep hitting fuel cut, and i was wondering why. I took my car on the highway and i watch my boost gauge and it held 15psi good untill it hit like 4500-5000 rpms and then the boost starts to creep up and it gets to about 19-20psi when its about to redline then i hit fuel cut. could it be the maf. I have no idea

 

[Rob]

Try reseting your mbc see if that does it .......may be the outside temp doing some of the extra creep ?

 

[Rob]

Shorten the Vacume line to the wastgate that could also be the problem