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Old 01-05-2003, 08:59 PM   #1
Scooby Newbie
Member#: 30160
Join Date: Nov 2002
Location: l.i n.y
9900 2.5rs

Default the hesitation problem???

i here alot of people complain about the hesitation and bogging at 4k but never understood until today. my car started the nasty hesitation thing. i think the car needs a flu shot or something? well juat wanted to share my pain
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Old 01-10-2003, 03:59 AM   #2
ImprezaRS dot com
over boosted again
Member#: 1458
Join Date: May 2000
Chapter/Region: RMIC
Location: Colorado Springs CO USA
2015 Forester 2.0 XT
2005 2.5 RS, 2013 Tribeca


Some people think that it is the learned fuel trim causing it, since an ecu reset often helps for a while.

Supporting that is the fact that the ProECM chip , which disables long term fuel trim, seems to fix this problem.

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