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Re: Thank you Mike (eom) (archive)

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Posted by JohnC on January 12, 2000 at 11:16:08:

In Reply to: Top speed is limited by RPM limiter...(more) posted by ///Mike G on January 11, 2000 at 21:05:46:

: not a speedo reading. Jim C. wrote a long explanation some time back. I will see if I can find and post it.

: : : Also if you want to measure the performance gains or loss of a modification under OBD-II you have to clear the DME, dyno, make the mods, clear the DME again and dyno again. That is the only way to get true results.

: :
: : : : I just had my 99 M roadster dyno tested in preparation to upgrading the exhaust and cold air intake. To my surprise, when we ran the test in 5th I got all the way to 150mph at redline (both on car's speedo and the dyno's).

: : : : I was expecting the computer to shut it down at 137, now I may reconsider buying the ODBII reprogramming from Dinan or Jim C.

: : : : I'll post all the results when the mods are finished, but stock HP was 211 at the rear wheels.

: : wouldn't you still expect the the speed limiter to cut in at 137, instead of pegging out the RPM limiter?

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