BMW M135i F40 ECU Remapping & Tuning Potential, Let me tell you basing it on the MINI clubman’s not a bad thing, certainly not for us anyway. Jokes aside this car was a real masterpiece of engineering. A controversial new design that probably doesn’t sit well with most die-hard BMW enthusiasts. I’m sure you’re aware that BMW’s previous M135i was a 6-cylinder rear-wheel-drive car powered by the N55 engine. We’re no stranger to the N55 and we always yield excellent results in terms of power & torque.
The new F40 is a very different beast. Firstly, it’s predominantly front-wheel drive with a rear assist, similar to the Haldex system used on a VW Golf. Secondly a new power plant, the BMW B48TU, an old friend you might say!
Ok, so down to business. Stock numbers for this M135i are 306 bhp and 450 nm.
It was an incredibly cold day and the car looked like an igloo before reaching the dyno cell! Temperatures were around freezing in the cell which probably helped get the book figures up, but still a positive result. The tuning capabilities of this car are slightly unknown. It’s literally brand new and since BMW released an update in July it’s impossible to access the internal memory of the ECU.
First on our list and the customer’s list was to remove the PPF and primary CAT. Our experience with BMW and the B48 engine made this a relatively simple procedure. We were confident that removing the restriction would yield positive gains. Check out our Youtube video here.
