Engine/Power - EJ20T (pre-2006 WRX and JDM) There is replacement for displacement, it is forced induction - OEM 2.0 liter turbo engines in the USDM WRX. 90-94 Legacy Turbo EJ22 turbo engines can also be discussed here.

Boost Leaking

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Old Sep 26, 2007 | 06:00 PM
  #1  
ho da wagon's Avatar
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From: Hi-state
Car Info: 03 Wagon
Boost Leaking

My car has a upgraded turbo, a vf 30 and when i am WOT about 4000-5500 rpm my blow off is letting out boost.

i read in a forum that someone had this problem and that he was having a compressor surge. is that the problem i have?

it happens almost everytime when i am at WOT.
Old Sep 26, 2007 | 06:32 PM
  #2  
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how much psi are you runnin on the vf30?
You might not even need the BOV unless you mean the recirc valve.
But the BOV opening prematurely? Sounds like a comp. problem
Old Sep 26, 2007 | 06:33 PM
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What kinda blow off valve do u have? How much psi is your car tuned up to?

If your car have any VTA bow, suggestion to put stock bov on. If your car is running 20+ psi, get a bow that vents back into intake.
Old Sep 26, 2007 | 06:37 PM
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Car Info: 2003 PSM WRX, 80 Brat ready for Chevy 350 Swap.
sounds like you need a harder spring for ur bov
Old Sep 26, 2007 | 10:22 PM
  #5  
ho da wagon's Avatar
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Originally Posted by AngrySubyWagon
how much psi are you runnin on the vf30?
You might not even need the BOV unless you mean the recirc valve.
But the BOV opening prematurely? Sounds like a comp. problem
Originally Posted by vietpunk916
What kinda blow off valve do u have? How much psi is your car tuned up to?

If your car have any VTA bow, suggestion to put stock bov on. If your car is running 20+ psi, get a bow that vents back into intake.

well i am boosting 15 psi and running a HKS ss
Old Sep 26, 2007 | 10:24 PM
  #6  
ho da wagon's Avatar
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Originally Posted by wrxisthebest
sounds like you need a harder spring for ur bov
maybe.idk but i want to make sure that its not a surge or boost spike
Old Sep 30, 2007 | 08:08 PM
  #7  
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Car Info: 2016 Acura RDX ... meh. Um, nice subwoofer?
If you have a catless downpipe, it might be your wastegate that's leaking.
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