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XperTune Performance Software
Fabspeed's XperTune software for the M235i, M2, 335i and 435i (F22/F87/F30/F32) uses a handheld device that reads your car's data through the OBD-II port, rather than requiring you to mail in your ECU. You send that data to Fabspeed, who write a custom tune and email it back within 1-2 business days for you to flash onto the car via the same handheld. Fabspeed states gains of 65 horsepower and 90 lb-ft of torque. You can flash back to stock at any time using the handheld, then reapply your custom tune whenever you like. The handheld pairs to a single vehicle, and the process requires a Windows PC (Mac isn't supported).
Frequently asked
Which cars does the XperTune Performance Software fit?
Fits your BMW 335i/435i (N55) (2011-2015). Fabspeed lists this piece for: BMW M235i / M2 / 335i / 435i. 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 mail in my ECU?
No, this uses a handheld device that reads and writes to your car's ECU through the OBD-II port, so there's no need to remove or ship it.
How much power does it add?
Fabspeed states gains of 65 horsepower and 90 lb-ft of torque.
Can I revert to the stock tune?
Yes, you can flash back to stock using the handheld at any time, then reapply your Fabspeed tune whenever you like.
What computer do I need?
A Windows PC; Mac OS isn't supported for this tuning process.
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.
