Tuning and flashing services for the 01-06 BMW E46 M3. Increase up to +30 brake horse power from base line tune for your S54 engine using our B-Spec Tune. Unlimited free add-on features to choose from. We’ve developed an Exhaust Backfire Tune for those who want more out of their exhaust. Check out our Stage 3 EBT flash for aggressive pops and occasional flames.