BMW M3 GTr 350 (E46)
ECU Tuning in Bedford

BMW M3 GTr 350 (E46) remap figures

• Fuel: Petrol
• Standard power: 350 bhp, remapped: 425 bhp (+75 bhp, +21%)
• Standard torque: 365 Nm, remapped: 445 Nm (+80 Nm, +22%)
• Service: stage 1 ECU remap, fully dyno tested

Petrol BMW 3 Series: what changes with a remap

Factory petrol calibrations leave margin for poor fuel and hot climates. A remap tunes the ignition, fuelling and boost maps to make better use of that margin, which shows up as livelier throttle response and stronger acceleration.

How the BMW M3 GTr 350 (E46) compares

Of the 26 petrol 3 Series engines in our data, this one comes 1st for power gain, which is 52 bhp above the 3 Series petrol average of 23 bhp.

Across our whole catalogue the average petrol remap adds 27 bhp and 51 Nm, so this engine's 75 bhp and 80 Nm sits at or above that benchmark.

BMW 3 Series engine remapping in Bedford

Remap Experts has a dedicated Bedford site, so you deal with a local team backed by a national network. We regularly work with drivers in High Wycombe, Stevenage, Milton Keynes, Leighton Buzzard and Hemel Hempstead and nearby areas of the East of England.

Each remap is dyno tested before it is signed off, and is protected by a 30 day money back guarantee and a lifetime software warranty. Ask for a quote online or by phone.

If you are closer to Luton, Milton Keynes and Cambridge, those neighbouring Remap Experts sites can help too.