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XperTune Performance Software
Fabspeed's XperTune handheld reflashes the 958 Cayenne S and GTS's factory ECU without pulling it from the car. Plug the handheld into the OBD-II port, send the logged data to Fabspeed by email, and a custom tune comes back in one to two business days to load through the same handheld. On the 4.8-litre Cayenne S, gains run from 400 to 420 whp and 369 to 384 lb-ft; on the GTS, 420 to 440 whp and 380 to 395 lb-ft. The handheld can flash the car back to stock at any time, and it's paired to one vehicle only.
Frequently asked
Which cars does the XperTune Performance Software fit?
Fits your Cayenne S / GTS (2011-2014). Fabspeed lists this piece for: Porsche 958 Cayenne S 4.8L (2011-2014); Porsche 958 Cayenne GTS 4.8L (2011-2014). 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 my ECU?
No, the Fabspeed handheld interfaces with the OBD-II port to read and write the tune.
What kind of gains should I expect?
On the Cayenne S, dyno-tested gains run from 400 to 420 whp; on the GTS, 420 to 440 whp.
Can I revert to the factory tune?
Yes, at any point, using the same handheld to flash back to stock and then to the XperTune again.
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.
