Is there a big difference in performance and sound?

 

I have the Stillen. Sound is nice- moderate without exhaust. I heard that there is another one coming out soon that is supposed to be the best thing in the world. I'm not holding my breath.

 

I think the major difference is that one is stainless steel and one is ceramic coated. Stillen I believe is stainless but I might be wrong...50/50 chance and all ...Warpspeed also makes one but I'm not sure of the physical properties. I think it'll be my next major mod once I pay a chunk of my rims and tires off. Probably the stainless version as I see snow and salt buildup in the winters here in KY.

 

Stillen is the powder coated one. But I have heard of people having problems with the Cattman...do a search.