Electronic tuning specialist Superchips has released a new performance boosting ECU remap for BMW's lively 135i Coupe / Convertible.
The Buckingham-based tuner said that as measured at its in-house four wheel drive chassis dyno', the electronic upgrade boosts the 3.0-litre six cylinder twin turbocharged engine's peak power from a tested standard output of 315 bhp, to 360 bhp, with a maximum power gain of 49 bhp at 5,989 rpm.