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Old 08-20-2011, 11:03 AM   #1
Scooby Newbie
Member#: 138697
Join Date: Jan 2007
Chapter/Region: MAIC
Location: Charlottesville, VA
11 WRX Limited 5DR
Satin Pearl

Default Low Rpm/Low speed Hiccup/Hesitation. 2011 WRX AP Stage 1

Ever since i flashed stage one on my 2011 WRX, i have noticed that the car has a hesitation/hiccup during low throttle acceleration. I have reset the ECU 2 times now hoping that it would fix the problem but, the problem is still present.

Example: When i leave a stoplight driving normally (low throttle/no boost/ under 3k shifts) the car will stutter/hiccup/hesitate around 2300-2500 rpm and you can literally feel the car lurch for a brief moment then it smooths out. It almost feels as the AC compressor is kicking on. It happens every time i accelerate, in 1st, 2nd, 3rd gear.

The car is all stock minus the AP and catback and the AC is almost always off. When the ac is on, the problem becomes worse.

Any Ideas?
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darren94 is offline   Reply With Quote
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Old 08-20-2011, 05:01 PM   #2
Scooby Specialist
Member#: 258628
Join Date: Sep 2010
Chapter/Region: Tri-State
Location: PA
2009 WRX stg2-SOLD
2012 MS3


Post some logs please.
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Old 08-22-2011, 09:50 AM   #3
Scooby Newbie
Member#: 276859
Join Date: Mar 2011

Is the hesitation happening around 2400-3000 RPM? If so that happens to everyone.
lickitysplitwrx is offline   Reply With Quote
Old 08-22-2011, 09:46 PM   #4
Scooby Newbie
Member#: 273862
Join Date: Feb 2011
Location: Georgia
2011 WRX STI 4D
Dark Gray Metallic


I get this same exact hesitation and it's between 2300-2700 for me. I don't remember having it when I was stage 1 but I definitely have it now at stage 2 and hate it! What are your mods other than AccessPort?
Phil_Dunphy is offline   Reply With Quote

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