E46 M3 - F1 EXHAUST
 

Not sure if this is old news. But came across it when looking for a few things...


An Exhaust System designed with two types of gas paths. Switchable at the flick of a buttom.

Kreissieg F1 Race exhaust system is a unique design that delivers performance and sound on demand.
Unlike any other exhaust, this system allows the driver complete control over the exhausts performance and sound attributes.

Normal Mode: This path is a traditional path that takes the exhaust through the catalytic converters and muffler chamber before it exits at the rear tips.

F1 Mode : This path bypasses both the catalytic converters* and muffler chamber, thus taking the exhaust straight from the manifold to its exit at the rear tips.
F1 Mode produces the greatest possible horsepower gain with a true F1 race-style sound.

Strategic placement of butterfly valves in the system allows for instantaneous control between Normal and F1 modes.
A switch placed within the cabin controls the valves. With a simple flip of the switch, the driver selects between Normal and F1 modes.

LINK: http://www.kreissieg-usa.com/?_page=...dx=1661&page=1

and only £5k for the back box. sweet

££££££££ :119:

Karbonkid, have you thought about a Borla?

My mate has one on his M3 and its sweet to look at and sounds the dogs. Nice deeper, throatier (calm yourselves people) burble but on song its just like the others, mean as :thumbs:

Will try and find a link...

Ebay link

Turner Motorsport - Bit cheaper

Borla Website

Have I just made a already difficult decision more difficult? :banghead: