In Reply to: M-Roadster Chip Software Dinan vs Bavarian posted by Jim Thompson on April 02, 1999 at 17:55:17:
Not only is the best ECU software upgrade out there but the going price is $399.
1. Removes top speed limiter
2. Increases rev limiter by 300 RPM.
3. Widely accepted as the best software upgrade for the M cars.
And before someone asks....It has the same effect on your warranty that the Dinan upgrade has....NONE!!! Neither will void your warranty.