Power loss

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Feb 14, 2003 | 10:18 AM

subypd

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Joined: Dec 2002

Posts: 21

Car Info: '02 wrx

Power loss

I just recently got my car back from its 30K service. Actually 34K due to time constraints. My problem is I now notice a lag in the engine power from 4K to 5K rpm's. This was not occuring before. Before I take it back to the dealer and it magically doesnt perform the problem for the mechanic, has this occured to anybody at all? Suggestions?

Feb 19, 2003 | 03:07 AM

Garnie0_0

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i guess i got the same problem.........it happen after take off the battery and restart the cpu after i install my airfilter.
it is werid....actually i don't know is that the main reason Because i installed the TurboXS RFL BOV b4........so i am not sure the power lost is because of the BOV or wat.......but i haven't heard about ppl got power lost after install the BOV......so .i don't knwo.....anybody know why????

Feb 19, 2003 | 07:23 AM

Wingless Wonder

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Posts: 10,029

From: Sacramento CA

Car Info: 02 Impreza WRX sedan

Originally posted by subypd
I just recently got my car back from its 30K service. Actually 34K due to time constraints. My problem is I now notice a lag in the engine power from 4K to 5K rpm's. This was not occuring before. Before I take it back to the dealer and it magically doesnt perform the problem for the mechanic, has this occured to anybody at all?

If the dealer performed a service which disconnected the battery, the ECU resets itself to default. Your ECU will eventually re-learn the 'lost' power. Would you like to try to recover the power faster?

Shiv's Re-Mapped ECU Learning Trick 10-20hp in 5 seconds

--
^ww^
"...axles of evil..." - George W. Bush

Feb 19, 2003 | 06:44 PM

Rotorflyr

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Im gonna have to remember this little trick, and I would bet it would work with (just about) any turbo-charged vehicle!

Feb 19, 2003 | 06:53 PM

Wingless Wonder

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Joined: Dec 2002

Posts: 10,029

From: Sacramento CA

Car Info: 02 Impreza WRX sedan

Originally posted by Rotorflyr
Im gonna have to remember this little trick, and I would bet it would work with (just about) any turbo-charged vehicle!

More so with the Subaru ECU (or ECM, as they refer to it). Theirs is a 'learning' computer, although when it encounters some bad gas and engine knock it takes a while to unlearn it.

--
^ww^
"...axles of evil..." - George W. Bush

Feb 19, 2003 | 08:17 PM

Rotorflyr

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Well I was thinking more along the lines of new(er) model turbos. Maybe from say, the past 2-3yrs, not something from like 10yrs ago. Any idea how far back their "learning" system goes?

Feb 20, 2003 | 07:16 AM

X1_SRT

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i know the ecu's in my talon as wells gsx' and gst's are a learning ecu. but i don't know if its the same idea as the subaru. or works on the same principal. i have read on dsm forums that disconnecting your battery will lose a few hp, so its probably similar. and mine is a 95.

-PJ

Feb 21, 2003 | 01:41 AM

Garnie0_0

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yeah

yeah.....that trick is really cool..........i just try it tonight..the power is back....it works really well......i just wondering do i just need to do it once and wat should i do after??.....

Feb 23, 2003 | 03:46 PM

subypd

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Joined: Dec 2002

Posts: 21

Car Info: '02 wrx

Thanks much for the info. I'll try it this week. Does the same thing need to be performed if I upgrade the ecu? I'm just a little schetched out about this car, I love it, but it seems to have a bad luck streak. Dented fender from garage, recent broken window from wonderful virginia snow plows and now this...