Hi. Just got a 330d E90 auto and been reading how extra power and improved mpg can be achieved. My only issue is reliability has any one any experience good or bad. Also live near Cambridge if anyone has any recommendations. 

A good remap (for economy and driveability) shouldn't compromise the durability and reliability of the engine....different story for remaps solely for performance gains (e.g. stage 1, 2, etc)

Hi, just got a 335d and contemplating a remap too. I don’t want to ruin the engine but wouldn’t mind a sensible remap. Bit more power and economy. I’ve read some horror stories online so interested to hear if anyone can recommend a remap. Thanks 

I use a DTUK Tuning Box on my Honda CRV 2.2 cdti and it is superb...much better economy and driveability