BMW Performance (Chip Tuning ?)

[urbun]

Hi,

Ive got a 97 BMW 840 (M62 engine) and want to increase performace.

Anyone know of any good engine or tranny chips (like Dinan or Conforti) and a reputable company in UK to supply them ?

May consider diff swap too ?

Any views.

[Marshy]

Birds do chips (Dinan, I think) - www.birds.uk.com/

Also, have a look at www.dsylva-tech.ca/ - they're getting good write-ups at the moment. Self-fit - the instructions don't look hard. Dunno if they have one for the M62 engine yet, but they're probably on the to-do list if not.