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Old 01-14-2021, 11:55 AM   #8
Scooby Specialist
Member#: 204541
Join Date: Mar 2009
Chapter/Region: Tri-State
Location: Collegeville, PA
2004 VF48 WRX Wagon
Java Black Pearl


Originally Posted by Zak6182 View Post
I'm not a tuner by any means but from my research it seems like the issue happens when its cold and going from open to closed loop. I think during that period the ECU is "hunting" for the right AF and it takes a second to find it due to TGV's not being there.

I recently read something on PhatBotti's website that it was normal and could be helped but not always completely corrected. I'll try to find it again.
This makes sense. Thank you for the info. I was concerned at first the fuel pump was faulty or something else was at play.
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