Fabspeed XperTune ECU Service for McLaren 675LT

Send in the 675LT ECU for a calibration matched to its existing hardware and fuel. The listed bench service returns the programmed original unit for reinstallation; sport catalysts are a separate hardware purchase. Fabspeed Motorsport designs performance exhaust systems, air intakes and ECU tuning in Fort Washington, Pennsylvania. Porsche and other sports-car applications are developed through dyno testing, road evaluation and racetrack work.

Technical Details

• Manufacturer product reference: FS.MCL.675LT.ECU.
• Complete the ECU information form and modification list.
• Manufacturer test peaks list 582 whp baseline, 629 whp with tuning and 635 whp with tuning plus sport catalysts.
• Those are different test configurations, not guaranteed output or a single additive gain.
• Confirm current stock-file restoration, turnaround and freight arrangements.
• No handheld tuner is included by this service listing.

Use restrictions

The calibration must retain required emissions controls. Fabspeed excludes requests to disable emissions equipment or its monitoring.

Installation Resources

• ECU Tuning Information - Bench Flash (PDF)

Manufacturer Videos

McLaren 675LT | Fabspeed Sport Catalytic Converters + ECU Tune | DYNO SESSION

McLaren 675LT (2015+) | Sport Catalytic Converters + ECU Tune

Demonstration vehicles may have additional modifications. The selected product configuration determines what is supplied; a video does not establish fitment or guarantee a particular sound or output.

Need help matching this part? PMB Performance brings over 20 years of parts and fitment experience. Send your VIN, ECU reference, fuel and modification list so we can help verify the application before you order.

Fitment & Compatibility