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Old 03-04-2002, 04:44 PM   #1
Gregwrx
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Member#: 6753
Join Date: May 2001
Location: Sarasota Florida
Vehicle:
2002 WRX
12.879/105.58

Default engine stumble after mod?

Just installed the sti injectors & supra fuel pump. Car now hesitate's at part throttle between 4800rpm/5100rpm.does it at part throttle and full throttle. Engine cleans up and runs great above 5100rpm. Also did the ground mod at the same time. No cel's. Any hints? Thanks Greg
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Old 03-04-2002, 07:57 PM   #2
nhluhr
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Member#: 7327
Join Date: Jun 2001
Chapter/Region: NWIC
Location: Seattle, WA
Vehicle:
2008 Mazdaspeed3
2006 Wrangler Sport

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use higher octane?
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Old 03-04-2002, 10:17 PM   #3
QA Guy
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Join Date: May 2001
Location: Houston, TX
Vehicle:
2002 WRX
Silver

Default

You might try disconnecting the newly added ground wires (to eliminate a variable) and see if the problem is still there.
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