Join Date: Aug 2001
Location: Denver CO
Thanked 100 Times in 83 Posts
Do not be surprised if a Diesel will beat a four-stroke engine in terms of acceleration. The characteristics of a diesel engine is low-rev torque. That is one reason why diesel engines are used in tractor-trailers, because they can pull heavy loads with the levels of torque. So in a light-weight car like the Audi TDI, the torque translates into acceleration, rather than brute pulling force.
The new Chevrolet Durmax Diesel is a very fast truck, but at 95mph, the torque cuts out, and the enigne does not have the horsepower to keep the truck at that speed.
Just put a chip in. I dont know of the specifics for the Z3 1.9, but it wouldnt hurt it. HOWEVER, YOU MUST PUT IN THE HIGHEST OCTANE RATING YOU CAN FIND NO EXCUSES...if you dont then you will mess up the engine. I think a 98 RON would be fine for you.