Stumc10
New Member
I have been looking at diesel tuning chips on ebay, they seem to be too good to be true, extra BHP, more torque, more MPG etc... Can someone please advise me on how reliable the claimed gains actually are? Can they damage my engine? Can anyone recommend a certain one, preferably someone with first hand experience? Sorry for all the questions, but I am interested in anyones comments/opinions before I jump in feet first. I have a 2004(54) CDTI with around 88,000 miles on the clock if this helps.