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      11-19-2007, 07:26 PM   #11
Terry335
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Drives: 335i
Join Date: Jan 2007
Location: Socal

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Quote:
Originally Posted by scalbert View Post
Today, I would sometimes see spikes as high as 22 PSI but most of the time it would drop to about 15 PSI. But there was one time it didn't drop so I immediately got off of it. The kicker is that this did not occur 100% of the time; more like about 30%.
Honestly, tuner politics aside, that is a pretty serious issue. I would not run the car again until you positively identified and corrected the cause. If you must do R&D work where boost might spike like that, at least run straight 100 octane to mitigate your risk.
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