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-   -   Hi RPM Power Surge (https://www.miataturbo.net/supercharger-discussion-38/hi-rpm-power-surge-22130/)

BarbyCar 06-08-2008 07:49 PM

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.

Saml01 06-08-2008 10:36 PM

Power surge, is a bad thing or a good thing? Im confused, why would you want it at lower rpms?

cardriverx 06-08-2008 11:13 PM

power surge as in the car went faster? Since when is that bad? Our engines make more HP as the rpm rises so...

BarbyCar 06-09-2008 12:12 PM


Originally Posted by Saml01 (Post 268592)
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. :giggle: 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.

cardriverx 06-09-2008 12:57 PM


Originally Posted by BarbyCar (Post 268753)
Power surge is a good thing - always. :giggle: 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?

steelrat 06-09-2008 03:19 PM

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,

BarbyCar 06-16-2008 02:56 PM


Originally Posted by steelrat (Post 268828)
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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