Originally Posted by Cal_Cobra
Again it all depends on the headers, not all headers are created equally, their tuned for different applications. On the Viper there's so much low end torque (488ft lbs stock) that loosing a bit on the low end probably may not be a big deal depending on what your doing wiht the car. I took mine to Thunder Hill and it was an absolute blast, sounds like a full on race car with the (then) new exhaust.
What headers are you running ? I'm also running a full billy boat exhaust, sans cats.
No headers Billys and hi flow cats. Probably will do the ROE supercharger but leave the factory exhaust manifolds. When I spoke to Sean at Roe there wasn't any gain in times with the headers. Open road coarse or top end speeds may make it worth while, but I'm not intersted in that. As it is it is extremely hard to get it to hook up.
