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Old 02-09-2019, 03:27 AM   #1
Creativelemon
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Member#: 497536
Join Date: Feb 2019
Exclamation Help! 2002 Wrx Not making full boost!

My wrx is only making 5-8psi boost when it should be making 15/16 psi, its not my gauge because it feels slow. I bought the car and it made normal boost for 2 weeks and has had this issue since, it once fixed itself for 3 days but than went back to the issue.

For reference, i have a 2002 wrx with Cobb stage 2 Dynotune(no access port) gutted up pipe, gutted downpipe, cobb catback exhaust, perrin intake tube.

Things i did to try and fix it:
WD-40 and wiggle the wastegate actuator arm
Replaced T hoses, thetop 2 vaccum lines to actuator and to turbo (pill included)
Pulled off line to wastegate actuator and it made 20+psi so that can rule out a busted turbo.
Replaced Boost control Solonoid and tested the wire to the solonoid.
Reset the ECU many times (popped off negative wire overnight)
Fixed the crooked intake hose in the Picture

Things to note:
Went over intake hoses and lines and no apparent signs of a leak or cracks
No apparent pre turbo exhaust leaks
Turbo still makes positive Pressure and builds it quickly
Can hear turbo spooling.

I have no idea what it could be and its driving me crazy, please help!! image was before new vaccum lines but im sure its piped correct.

http://imgur.com/a/W4Ll9ga
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Last edited by Creativelemon; 02-09-2019 at 02:10 PM.
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Old 02-09-2019, 01:42 PM   #2
bugeyerex02
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Member#: 195967
Join Date: Nov 2008
Chapter/Region: NESIC
Location: Massachusetts
Vehicle:
2002 WRX
WR Blue

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are you sure you have the restrictor pill in the right hose?
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Old 02-09-2019, 01:44 PM   #3
Creativelemon
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Quote:
Originally Posted by bugeyerex02 View Post
are you sure you have the restrictor pill in the right hose?
I am positive
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Old 02-09-2019, 02:00 PM   #4
bugeyerex02
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Location: Massachusetts
Vehicle:
2002 WRX
WR Blue

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well, 8ish PSI is waste gate pressure on a td04, so there's SOMETHING wrong. did you get a brand new pill? you're sure the vacuum lines are piped right?

IIRC, you can have the pill in backwards as well. you could always get an MBC and setting the boost manually to see if that fixes the problem as well.

However, more than likely there is something wrong with the plumbing.

I cannot see the pic you posted, so I can't check for you.
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Old 02-09-2019, 02:06 PM   #5
Creativelemon
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Quote:
Originally Posted by bugeyerex02 View Post
well, 8ish PSI is waste gate pressure on a td04, so there's SOMETHING wrong. did you get a brand new pill? you're sure the vacuum lines are piped right?

IIRC, you can have the pill in backwards as well. you could always get an MBC and setting the boost manually to see if that fixes the problem as well.

However, more than likely there is something wrong with the plumbing.

I cannot see the pic you posted, so I can't check for you.
Ill repost the pic now should be up in 5mins. Brand new pill. Im sure the lines are piped correct its not backwards.
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Old 02-17-2019, 09:55 PM   #6
Creativelemon
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Bump, this is so annoying my dads maxima smokes me!
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