SLK55 Kleemann engine headers

[BenzedUP]

If its similar to the C63 its got no chance, from what people on here have said. I thought the secondary cats didn't have much in em, and the primaries do most of the work lol.

I'm not sure to be honest mate, but as you know it's a 3rd car, so I'm not fussed, I would have gone Catless to gain a bit more power but it will drone for sure and it will be stupid loud, right now it's perfect, quiet when cruising but mental when pushing it.

I'll let you know in a few months time about the MOT!