BMW M3 E90 / 92 / 93 XperTune Performance Software Style:Default then you will need to

then you will need to select the OTP ECU tuning option

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Replace the factory mufflers with our high performance Maxflo Exhaust System

and enhanced design when compared to OEM Simple DIY (Do-It-Yourself) bolt-on installation

BMW M3 E90 / 92 / 93 XperTune Performance Software Style:Default then you will need toAchieve maximum power from the BMW M3 V8 engine without sacrificing drivability or reliability by optimizing the engine's performance. Fabspeed Motorsport offers an alternative tuning method for vehicles equipped with ECU's that traditionally required bench flashing. No longer do you need to remove your ECU and mail it in for a tune. The Handheld device interfaces with the OBD II port on your vehicle and your computer to complete the tuning process.