Recently got a 123d coupe 2010 under a 4 year lease, tried to make it faster straight away, went to Celtic tunining up in Cromwell an got about 269 bhp an 373 lbft torque, but sometimes the engine management light would pop up when i floored it, yet sometimes I did 160 no probs.
So at the end, had enough an wanted to check something out through bmw so i got it taken out. Now first question is, if i take it back to bmw would they find out, and if so, how can i avoid this?
I wanted to make it faster, so a mate sent me to Torque exhausts up in north london, the guy recommended a vortex exhaust system, with a piggy back an brembo brakes. Now, bearing in my mind my cards a diesal does anyone know what it may sound like, good bad? OR are there better ways and things out there for the car?
They have quotes me £2500.00 for everything with brembos, pads, discs, sensor and calip. Also, out of interest, what is the most amount of miles you guys have got from a 123d from a full tank?
Inputs are all appreciated. P.S does anyone know if I could normal tyres instead of run flat ones, would it be better or not? The car itself came with run flats.