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Re: Dyno # for 91 M5 (archive)
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Posted by John K on July 23, 2001 at 18:49:35:

In Reply to: Re: Dyno # for 91 M5 posted by Benster on July 23, 2001 at 15:24:46:

A little low?! I'd say, that's 25 or so ponies. Looks like off for a compression and leakdown. Damn!



Seems a little low. I had 281 with a chip.

http://www.geocities.com/bcantana/Bimmer_1099/Dyno-Dinan-vs-JC.jpg

One minor note ... When I was at the dyno, a 1997 540i sport was also showing lower numbers than expected and some unusual fluctuations in the graph.

On a whim, we yanked the ABS fuse (thinking that maybe the ABS system was adjusting the throttle as well) and the curve smoothed out and the numbers were right in line with the 15 to 18% loss.

I made my runs without the ABS fuse as well.

-benster

Got some dyno #'s for My 91 M5. . .Looks like 258 HP rear wheel at 6800 rpm. Isn't it 30% for Flywheel to rear wheel #'s? I can't remember.

Thanks


John K





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