Hi guys,
I'm from Italy.
Tomorrow I'm going to buy a pretty new Carnival 2.9 TDI.
I think I will tune my original chip (eprom) and not installing an additive chip.Talking with friends and meccanics about installing an additive chip (tuning box) or putting a new file in to the original chip everybody says that the second option is better. The tuning box increase only the fuel pressure and a few other things :-(- so you will waste gasoil....



while with a new file on your original chip :-)+ you will have all the settings ok for your car...
you will use only more gasoil when you need...and there is less stress for the engine.

Bye Picchio