08-12-2016, 11:21 AM
Join Date: Jan 2011
Obviously I thought this would be a better than average system with plenty of flow. Actually should flow close to twice what a single muffler flows. This might have been the problem, the size of the pipes (3") couldn't keep the velocity up high enough to provide good scavenging of the exhaust gases. Plus the cross over pipe was possibly disrupting the flow even further. All this together was very loud and I lost a lot of low end that we tried to tune back in and couldn't. Removed the duals and put the old Pacesetter off road Y pipe back on and used a single Aero 3030xl. and got the low end back but was still louder than I wanted. Replaced the Aero 3030xl with a 36" si/so straight through Magnaflow which I had a similar muffler on before and liked. It's all 3" dumped just in front of the axle. This has a distinctive sound at idle and cruise is comfortable with wot being loud enough to let everyone know something is on the move. This configuration ran 13.3 with low to no boost. The hemi apparently likes a high velocity smooth flowing exhaust, anything else you will pay with lost power. when you use long tubes you have to design a system that compliments the free flowing headers. None of what I have said is scientifically proven. But I can tell you what didn't work. Also something to consider is the pipe will have to go under the frame, this would be a real problem lowered. The only open space is in front of the rear wheel, the bed has a gap that a pipe can be snaked through. I ran 6" side pipes on a 68' Camaro that I really liked, with the exception of burnt ankles getting out.....
2003 RCSB, 2wd, "Pro-Street"
6.4L/cog driven V7-Ysi/46rh trans/HTH Truckarm coilover suspension. HP Tuning...
1956 Jeep Willys Pickup Hemi powered "Street Rod project"
1# 2017 HTC FASTEST HEMI List....
Current 1/4 mile [email protected]
Current 60' PB 1.351 (2019) mechanical issue for 1/4m
HTC 2018 TOTY
Support vehicle- 2007 QC G56 4x4 diesel