B-Spec Tune – BMW E46 M3

The B-Spec Tune is an off-the-shelf (OTS) E46 M3 MAF-based E-Flash tune that delivers a smooth power band all the way to redline while improving engine performance over stock. Get up to 30 whp / 15 wtq over baseline tune with 16+ free add-on features. We do not support forced induction (FI) or Alpha N configurations at this time. Tuning may take up to 5 business days, from the time we have your bin file and screenshot, to complete.

⚠️ None of our tuning products can be used at any time on any emissions control vehicle that is used for anything other than off-road/track performance and shall not be used on public roads. We have the right to cancel your order if deemed necessary.