MattD
The ECU remap is definately worth doing over stock, you will see a big difference in response and torque.
Be careful, as the M81 ECU's over the older M80's are protected and not remappable. These are on the newer 135i's. A few have been attemped and the uploads crash out at 99%. If you have one of these then a piggy back is probably the only solution right now.
I think mid 08 onwards came with M81 ECU's.
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Eibach Sports springs, Evole Remap, Quafe LSD, AR Downpipes, Forge FMIC, Hart'ge Quads, BMS Intake.
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