Possible reasons that actual boost would be more then requested?
10-14-2004, 06:29 PM
#6
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Didn't you just put on Labree's w/test pipes?
A boost spike can occur if your backpressure is reduced significantly. My car was equipped with test pipes on apr stg2 software and had a vicious spike in my stock, 93 oct and 100 oct programs. When I got updated to stage 2+ software primarily to get rid of my CEL, I also noticed that my boost spike was completely gone. I can only assume that n75 duty cycle was changed to accomodate for a looser exhaust which makes your turbos spool up much faster.
Many people on the forum have added mbcs in parallel to the n75 to stop the spike.
Many people on the forum have added mbcs in parallel to the n75 to stop the spike.
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10-14-2004, 06:37 PM
#8
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I would suggest doing multiple 3rd gear pulls to make sure....
reason being, I've done back to back runs with varying boost curves i.e. actual being more than requested & vica versa. Doesn't look that off. What brand chip?
