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BMW Z4M (2006-2008) MSS70 ECU Tune - Naturally Aspirated Alpha-N

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See our full write-up for more details and other tuning options!

Naturally Aspirated Alpha-N: Specifically developed ECU tuning for naturally aspirated Z4Ms whose modifications preclude the use of a MAF sensor, such as carbon airboxes or velocity stacks. Our alpha-n tuning process is identical to our MAF-based custom tune- our performance tune is revised based on customer-provided data logs of the vehicle in action on the street, track, or dyno. We do not offer an OTS alpha-n tune due to its sensitivity to changes in hardware or environment, and we recommend customers be wary of tuners that offer OTS alpha-n tunes without revisions. The nature of alpha-n tuning requires that we shape the calibration to the exact vehicle and its use, and as with our other custom tunes, we utilize advanced data analysis software to optimize the tune. The result is more power, better efficiency, and greater reliability with our alpha-n tunes.

Additional Tunes: Three additional tunes can be purchased for $500. Examples include summer/winter, high/low altitude, pump/race gas, E85, OBD2 monitoring on/off.

EWS Delete: We are one of the few that offer EWS deletes for MSS70. Commonplace on race cars, an EWS delete allows for "hot swapping" ECUs. Customers can have multiple ECUs with different configurations and switch between the ECUs at any time. Please note that EACH ECU requires an EWS delete modification at $300 per ECU.

FIC Fuel Injectors: Severn Tuning recommendations are as follows.

525cc - Naturally aspirated applications on pump gas, flex fuel, or full E85; forced induction engines up to 400 whp on E85, or 520 whp on pump gas
650cc - Forced induction engines up to 500 whp on E85, or 650 whp on pump gas