In Reply to: M3 dinan tranny chip posted by mpower on June 12, 2000 at 23:00:47:
: and no flames please, for those who travel 68 miles a day in all traffic, a 5spd is hell.
I have the tranny chip on my Dinan SC '94 325iC: my opinion is that it doesn't make much difference. And, the chip has been the source of a recurring problem: the transmission failure light has gone on twice (in the last 6 months) locking the transmission in 3rd gear. After cooling down the light doesn't go back on and the transmission works properly, so it was hard to diagnose (even with the fault code readout). First mechanic gave up (this was for the previous owner). Second guy (mine) figured out it was the Dinan chip, but since the problem was intermittant Dinan won't replace until it fails. (They simply reset the chip and returned the car).
Anyway, in (subjective) comparisons of my car to non-Dinan examples I couldn't see much difference in auto transmission behavior. On the other hand, Car & Driver found 'chips' on normally aspirated cars only really seemed to supply benefits for auto transmissions!