Quote:
Originally Posted by Hugh Keir
Here is a logged example of the problem that is caused when a high power GTR runs the CAS for ignition timing. The graph shows a the CAS error as you go up the gears in my car, although I do not use the CAS to provide ignition timing.
The 0 to 100 scale on the left = 20° of ignition timing which if you look at the trace = 10° of ignition timing wobble
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Great post Hugh - though this confuses me more: If this is a harmonic problem or due to 'belt flex' then why does it manifest itself more in a higher gear? Surely it should be the same at the same engine revs no matter what gear you are in?