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XperTune Performance Software
XperTune performance software for the BMW M3 E46 (2002-2006), delivered through a handheld tuner that interfaces with the car's OBD-II port instead of a full The car's engine control unit; reprogramming it changes fuelling, ignition timing and boost pressure. bench flash. Reprograms sensor inputs, air/fuel ratios and other parameters on the 3.2-litre straight-six, lifting output from a stock 343 hp/269 lb-ft to 365 hp/285 lb-ft, with Stage 2 tuning capable of up to 32 hp and 26 lb-ft over stock. Fabspeed reads your car's data via the handheld, writes a custom tune within 1-2 business days by email, and the handheld stores your factory settings so the car can be flashed back to stock and re-tuned at any time without shipping the ECU anywhere.
Frequently asked
Does the XperTune Performance Software fit my M3?
This listing is specific to the BMW M3 (E46). Exact fitment for your year, trim and options is confirmed on your free consult before anything is ordered.
What does the price include?
The delivered price includes the part from Fabspeed USA, freight to Australia, import costs and GST. Enter your postcode to refine delivery; the final figure is confirmed on consult.
How long until it arrives?
Every Fabspeed part is made in-house at Fabspeed USA with about a one-week production lead time, then allow another 3-4 days for delivery to Australia via UPS. That freight is already included in the price.
Do I need to remove and ship my ECU?
No. The handheld tuner reads and writes through the OBD-II port, so there's no bench flashing or shipping the ECU to Fabspeed.
How much power does the tune add?
The base tune lifts the stock 343 hp/269 lb-ft to 365 hp/285 lb-ft, with Stage 2 tuning capable of up to 32 hp and 26 lb-ft of gains.
Can I revert to the factory tune?
Yes. The handheld stores your original settings, so you can flash back to stock or back to the XperTune map at any time.
Who installs it?
Rennen Motorsport in Adelaide, or an authorised dealer near you. Fitting it yourself may also be an option depending on the part, so raise it on your consult; professional installation is quoted separately.
Is it covered by warranty?
Fabspeed products carry the manufacturer's warranty, supported locally through Rennen Plus as the Australian principal. See our returns policy.
Can I just buy this outright, or do I need to talk to someone first?
Every enquiry, whether it's one part or a full build, starts with a free consult. We confirm the exact spec for your car before anything is quoted or ordered.
