Which version of Mems are you running? If you have Mems 3 (no distributor, coil packs on top of the engine) a remap on a rolling road could sort it out. If you are running one of the earlier ECUs it would probably mean looking into changing the ECU. Its basically a fuelling / ignition mapping problem.
Chris
That's good news!Just thoughty I'dlet all you luvly people know that my little red baby passed the emissions test, and hence the MOT. The mechanic did have to change the sports CAT for a standard one, and replaced the Lambda sensor, and the results (according to the print outs) were quite astonishing. Will be waiting a couple of months and then having the emissions tested again to see what happens. Car still sounds beautiful, and seems to be going as quick, but I've been driving my van for a few weeks, so ANY MG would sound and feel good
Have enjoyed participating in this thread, but will be keeping an eye on any additions. Thanks to all