ok i was driving and i accelerated from 2nd gear and when i went up to 60mph with the peddle to the metal. the pressure dropped drastically. it sticked close to .1 but when i got close to 6000 rpm it dropped down to .05 and under. i was wondering if this is common or is it like not getting enough air or fuel or anything? it feels like im not getting all my 13psi

ps my subaru is bone stock only upgrades/deletes is suspension and silencer delete ( air intake jug in right fender)

 

How many miles? Is your actuator solenoid valve taking a dump?

 

47k

 

check the intercooler-tb hose, among other hoses.

 

Well if you're on the stock TD-04 then it's designed to drop towards redline since the turbo itself is too small to make decent boost (non-hot air) which is completely normal. Was this a change from what you normally feel/see?

 

sounds like the wastegate could be stuck open...would say boost leak, but you didn't mention any problems with idle, which you should have if this were the case.

 

i just got this car 2 months ago i only put less than 5 thousand miles on it. i dont drive hard because im a fuel efficient guy i drive alot and i would like to get my mpg out of the car.

anyways it peaks out towards .1 and sticks there but what 13Brotary said that it normally drops when close to redline i can understand that.. i didnt think it would drop thought it would stick all the way through redline. so is it because the turbo is so small? or maybe it needs to lose some air restrictions. like up pipe down pipe air intake etc?

 

the car doesnt have any idle problem

 

ps the previous owner was a old guy he took car of the car so i know he didnt beat on it..

 

so please clarify (unless im an idiot and can't read).. what psi are you boosting at right now (peak) and at what RPM? Taper is totally normal unless you have too large of a turbo, lol...