smokey 320d 2004 ........suppose youve heard it all before...
just bought this car recently....slowly getting used to it.
when i bought it the guy hinted that it may be remapped/chipped.
it seems really fast - to the extent that the brakes seem inadequate.
my concern is that it lags quite noticeably and smokes heavily (black) under hard acceleration.

any thoughts on how i can verify that its been upgraded would be much appreciated.