jimtc86

yea anybody else boost reading wrong? i have a scion tc turbo from greddy and it says that its suppose to be boosting around 8.5 psi but my gauge says that im only boosting 5psi does anybody no what the problem is and should i get a boost controller and boost it up

malibuboy54

hmm, i thought the amount of boost is regulated by the wastegate.....how does the boost controller work?

zer0

5-6 psi is normal with a greddy kit... just get a boost controller and put it to 9psi and retune..

Its a common thing with the greddy kit, you are not the only one.

tCrew_R

thats true. My boost gauge reads 6psi all the time, but im not complaining, it got me 240whp.

Like Zero said, just get a boost controller, bump up the boost and retune..oh yea and get a full exhaust too..thats what im doing when i get back from vacation in january