Ive seen many videos of the Audi A4 1.8T beating the Volkswagen Jetta 1.8T. Even though the Audi's engine has a slightly higher horsepower rating, the Jetta is lighter... Arent they basically the same engine anyway??

Here is an example of a video that I saw.

http://racingvideos.ultimatestreet.c...lkswagen-jetta

Does anyone know???

 

Audi prerforms better Probably because the computer's chip is different.