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Old 07-14-2010, 11:03 PM   #296
Scooby Guru
Member#: 23553
Join Date: Aug 2002
Chapter/Region: MAIC
Location: Slippery Rock, PA
2005 STI - Insanity!
2014 WRX - Daily


Guys, based on logging, it appears that my car spikes a few psi above target boost just about every time, is this normal? I have my boost cut set at 3psi above target and I hit boost cut during a hard pull up a hill the other day. I turned the manual down a bit so that it wouldn't happen again but why is this happening? After the spike the boost holds rock solid on target so the system is working fine in that regard.

My target 27.5 psi and its typically spiking no more than 2 psi which is about 7% so its not like its a major over boost or anything. Is there any way to reduce or eliminate the spike?
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