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Old 06-08-2008, 08:49 PM   #1
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Default Hi RPM Power Surge

Seeking advise and opinions.

I took my car to the track on Friday for its first lapping session after boost install. There was a significant power surge at 6300 rpm to redline at 7000. Any thoughts on why it would be there and how I can get it to happen at lower RPM.
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Old 06-08-2008, 11:36 PM   #2
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Power surge, is a bad thing or a good thing? Im confused, why would you want it at lower rpms?
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Old 06-09-2008, 12:13 AM   #3
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power surge as in the car went faster? Since when is that bad? Our engines make more HP as the rpm rises so...
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Old 06-09-2008, 01:12 PM   #4
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Originally Posted by Saml01 View Post
Power surge, is a bad thing or a good thing? Im confused, why would you want it at lower rpms?
Power surge is a good thing - always. I would just rather it happened sooner in the RPM range. My red line is 7K, the power "step" happens at 6.3K so I get a 700RPM range before having to upshift and drop out of the surge. If the surge happened at 5K then I would still be in the surge range for the upshift.
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Old 06-09-2008, 01:57 PM   #5
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Originally Posted by BarbyCar View Post
Power surge is a good thing - always. I would just rather it happened sooner in the RPM range. My red line is 7K, the power "step" happens at 6.3K so I get a 700RPM range before having to upshift and drop out of the surge. If the surge happened at 5K then I would still be in the surge range for the upshift.
do you have a boost gauge? Do you get boost at the lower rpms? Do you hear the belt slipping?
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Old 06-09-2008, 04:19 PM   #6
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6-rib kit with the autotensioner, @ 5psi-ish, so slip shouldn't be an issue. It is running the stock PC for fueling though. I figure the AFR's are leaning out up top (normal for a PC), and that's where the extra snap is coming from.

Dave,
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Old 06-16-2008, 03:56 PM   #7
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6-rib kit with the autotensioner, @ 5psi-ish, so slip shouldn't be an issue. It is running the stock PC for fueling though. I figure the AFR's are leaning out up top (normal for a PC), and that's where the extra snap is coming from.

Dave,
I WANT MORE SNAP!!!!


Yes, Cardriverx I have a boost gauge and it seems to my limited knowledge that boost comes in where it should and I do not hear belt slippage.

I guess more boost and better fuel management is in my future eh? (Canadian joke).
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