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Boost problem @ high revs. Choke/stutter

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Old 15 October 2009, 02:07 PM
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my_98WRX
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Default Boost problem @ high revs. Choke/stutter

Hey guys.

This avo the scoob had a bit of a fit, was hoping someone could help me out wit this.

I was in 3rd coming up to 5000rpm, the car choked and hesitated ... i backed off a bit, then accel at half throttle, it was fine.

Tested it for the second time in 3rd under load...same problem.

i recently replaced the AFM.
No codes popping up and none stored in ECU.
Running standard boost with a front mount.


Any ideas would be greatly appreciated
Old 15 October 2009, 02:10 PM
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imprezahubbard
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sounds like you might have to have your throtel body cleaned i had the same problem with a gti turbo but is was fine after that but i could be wrong
Old 15 October 2009, 02:13 PM
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mr_D
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clean the boost lines also. check the wastegate solinoid and also clean it. then try that.
Old 15 October 2009, 02:19 PM
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my_98WRX
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Originally Posted by mr_D
clean the boost lines also. check the wastegate solinoid and also clean it. then try that.
Thanks guys.
Im a bit new to this, so how can i locate the wastegate solenoid to give it a clean? MAF cleaner would do the job as well right?

Also when you say clean the boost lines, do u just mean the vac hoses?

Cheers
Old 15 October 2009, 02:56 PM
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imprezahubbard
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i had my throttle body cleaned out by a garage didnt take long worth doing
Old 15 October 2009, 03:42 PM
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mr_D
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yeah vac hoses on the turbo and the wastegate solinoid is on the suspension turet on drives side under the bonnet. maf cleaner shoudl be fine
Old 15 October 2009, 05:14 PM
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WRX Blues
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This time of year, with cooler temps, some scoobs are prone to overboost resulting in fuel cut - that said, if you hit fuel cut it is not a stutter - more of an 'oops...just run into a brick wall' effect...may be worth considering though
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