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Old 11-14-2005, 09:18 AM   #1
JDM_Scobaru
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Join Date: Mar 2004
Chapter/Region: MWSOC
Location: West Virginia University
Default Hesitation when car hits full boost (sometimes)

I recently just discovered that a bolt is missing from my IAC, i check it out, and it turns out that one of those bolts was snapped into 2, and a little chunk is still left in the IAC. This is the only thing that would casue my hesitation, since air,pressure, is going right past the bolt. Does this seem logical, this is the only logical answer I can think of. Sorry if this is confusing. I am going to get a new gasket, try to drill that damn bolt out, and replace with a new one.

Zach
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Old 11-14-2005, 11:10 AM   #2
MachinesWRX
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2005 WRX
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some people say its the switch from open-loop fueling to closed-loop fueling.
this is usually the case on 04-05 WRX.
But i get that feel in my 03. i personally think its the fuel maps taking a huge rich surge to to around 10:1 at the onset of boost. But thats just my guess. A good tune will make this problem go away and get a ton more power. good luck

-Chris
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Old 11-14-2005, 11:35 AM   #3
JDM_Scobaru
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I have never really thought of the open/closed loop problem. That could possibly be it too. I still think that I get hesitation because of air going through some hole or something.
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