Engine/Power - EJ25T (STI and 2006+ WRX) Discussions about the USDM 2006+ WRX and WRX STi 2.5 liter turbo flat-four.

Boost Cut

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Old 08-13-2008, 06:01 PM
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Question Boost Cut

When im driving and i look at the stck boost gauge sometimes it will go up to .05 and then it will only go to .10. Do you guys know what the problem could be. It happens on and off. Like sometimes its fine itll boost all the way and at other times it just dosent boost right. The only mods i have a are a muffer delete.
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Old 08-13-2008, 07:41 PM
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try disconnecting the connector on the negative battery terminal next time it happens then push the brake a few times. then reconnect the cable. this may fix the problem but i have found it is only a matter of time until it happens again. my car has been acting up like this too and im going to take it to a shop soon to try to figure out whats wrong or what sensor is bad.
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Old 08-14-2008, 09:33 AM
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wait.... when you drive around your boost changes... oh my god.
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Old 08-14-2008, 09:39 AM
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Don't you work at a dealership? Have them take a look at it.
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Old 08-14-2008, 09:41 AM
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Lol
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Old 08-15-2008, 12:11 PM
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Wow.....Jazz......ummmm....I'm not quite sure what to say to this.......

Just for your information....
0.1 megapascal = 14.503773801 pound/square inch

14.5 psi is how much boost your car produces stock.






edit: One question for you...what is a Muffler delete? You are running with no muffler on your car? that **** must be loud!

Last edited by GotBoost?; 08-15-2008 at 12:15 PM.
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Old 08-15-2008, 12:31 PM
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technical forum?
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Old 08-15-2008, 12:34 PM
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Originally Posted by sigma pi
technical forum?


I'm inclined to say yes, however, I'm thinking a n00b forum might be appropriate for this one. j/p
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Old 08-15-2008, 12:37 PM
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Old 08-15-2008, 12:45 PM
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Originally Posted by GotBoost?


I'm inclined to say yes, however, I'm thinking a n00b forum might be appropriate for this one. j/p
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Old 08-15-2008, 12:51 PM
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See thats the thing sometimes it dosent boost to 14.5 it only boosts half way.
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Old 08-15-2008, 12:58 PM
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you are in 1st gear you wont boost 14
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Old 08-15-2008, 03:23 PM
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Originally Posted by jazzml
See thats the thing sometimes it dosent boost to 14.5 it only boosts half way.
1st and 2nd gear boost less.
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Old 08-15-2008, 05:41 PM
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That part i established but even in 3 and 4th. I reset my ecu and now it works fine its just sometimes it does that.
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