ok if i get on my car when i hit abotu 4700 rpms it starts stumbling like im pegging the rev limmiter. it does this from abotu 4700-when i shift. i was wondering if you guys think this might be a fuel pump or opti or something else. what do you think. and btw i got a 97 m6 ta with 65000 miles

 

I had the same problem it only happend in 3rd gear and above gears changed my spark plugs problem fixed.

 

about 6 months ago i had a problem at 2500 rpms but then i changed my plugs wires and coil and it seemed to move up to above 4500

 

could it be my coil. i jsut replaced it but could it already be dead

 

ttt for night crew