Power loss a week after protuned - Subaru WRX Forum
 
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#1 Old 08-19-2010, 09:50 PM
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Unhappy Power loss a week after protuned

Hey guys, I have recently encountered a problem. My car had been protuned and was running really strong for a week and now it just isn't pulling like it was. I know it's not that I got used to the power or anything. I mean it lost a ton of power. It idles and runs fine but when I give it gas, the sti just doesn't wanna go. There isn't any weird sounds or anything.

There isn't a boost leak. I have checked thoroughly.

As far as mods, I have: invidia dp & exhaust, cobb sf intake, 50/50 bov, cobb ap.

Any help or ideas where to look is much appreciated
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#2 Old 08-19-2010, 10:02 PM
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Forgot to mention that I have a Walbro 255lph fuel pump
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#3 Old 08-19-2010, 10:52 PM
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Your boost gauge reads a bar and then some in third gear or higher when it's floored?

355 awhp fp green six speed wagon in Corvette Atomic Orange
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#4 Old 08-20-2010, 11:59 AM
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No CEL's ??

Bet it's a boost leak... I know you already looked but there are a TON of places to look.


When did you notice the power change ? In the middle of a pull or after it sat for the night ?

Paul
2007 XT
2007 MS3
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#5 Old 08-21-2010, 10:20 PM
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There is no CEL and it was noticable the next day. It seems like the power is there one day but gone the next.

When I had gotten the new map I had a bad battery. Could that possibly have something to do with it?
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#6 Old 08-22-2010, 11:09 PM
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Cant imagine it would... again, does your boost gauge read above a bar when floored?

355 awhp fp green six speed wagon in Corvette Atomic Orange
-Brandon
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#7 Old 08-23-2010, 07:29 PM
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Ok I noticed now that when it's running weak it's only hitting 10 psi on all gears. When it's running strong it's getting up to 20 psi in 3rd - 6th gear. I might try and reflash the map. Maybe that might do the trick.
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#8 Old 08-25-2010, 07:18 PM
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what did you use to pro tune ? Cobb ? Can you post some of your logs
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