Quote:
Originally Posted by ///M1
Their E39 M5 application was greatly flawed as it was an open-air design and actually sucked hot air in. On the RS 4, caused CELs which no tuner could fix. On either car, their performance gains were never substantiated independently.
|
just to point out, one of those cars was indeed tested at an independent shop:
http://www.europeancarweb.com/tech/p...and_n_drop_in/
here's vid with no cel:
outboard sound:
I doubt the M5 will sound like this since it is turbo but would be nice,