i recently went out to find what psi i am peaking at when im driving, i have catless down, uppipe, drop in, and of course cat back.. anyways on my stock boost guage, it is peaking at around .05-.06 MPa.. which when i convert it over to psi, its only coming out to around 9 psi.... could there be something wrong with the conversion calculater that im using or is it true that i am peaking at 9 psi?? if this is true what can i do to get it back to the normal 13.5-15??

 

i peak at .9 bar ~ 13.5 psi iirc... this is according to my factory boost gauge as well. i suggest checking to make sure the uppipe & related gaskets are intact and properly torqued.

 

well heres wut i found out, every gear maxes out at .06 which is weird because what i heard is that 5th gear is supposed to max out at like 9 PSI, and if there was a leak in my uppipe or anywhere else causing the boost to drop, then wouldnt my fifth gear be peakin boost alot lower than the .06MPa like every other gear has been peaking out at??

 

the conversion is 145 or 147 psi for 1 mpa. so you math is right you are about at 8 to 9 psi. i would do what jwrx said. check all your tq's and also your waste gate hoses.

 

i wasnt aware that the wrx ecu was factory equipped to limit boost according to gear selection.

..and even if it did, it wouldnt likely be basing the 5th gear limit on any given sessions max boost. it would most likely be based on a set limit.

 

I don't think the ecu limits boost via gear selection. I think the higher gears (4th & 5th) boost a bit lower because of a few different things...load being one of them. I may be wrong though..