well im working with quicktime performance click here for qtec on a full 3" exhaust system with a header. right now we have the exhaust cutout installed on my ss, i will have dyno sheets and time slips available soon. The 3" exhaust system will have a 3" race muffler with there exhaust valve modified and built into it so when closed it will restrict the flow and quite the exhaust for normal use and when opened it will have no restrictions.
we are in the R&D stages and will have it ready asap.
im going to upload a video of the cutout on my ss so you can hear the difference.

 

it's gonna be LOUD

 

Why is eveyone trying to go so technical and out there to make an exhaust for these things?

Make a Cat-Back with a high flow resonator and a oval straight through muffler. Why mess with all of the fart can designs. The first company that makes a decently priced Cat-Back like stated above will make easy money.

 

that is exactly what i need