April 8, 2006Hey guys,maybe you can help I have a 02 duallie with an 8.1 and I tow a 15,000 pound camper I just went to florida and averaged 8 miles to the gallon which is'nt bad since I get 10 around town do you think a flowmaster might help? I talked to the flowmaster booth at a show and they said they dont offer a dual system because It hurts the performance of the truck but I was thinkin just a muffler anybody have any thoughts?? thanks Dave
April 8, 2006headers, hi flow cats, mufflers... complete system would give you some gains....
1995 Chevrolet K2500 5.7L V8 TBI 4L80E 4.10`s C6P SF rear axle 130,000 miles
April 8, 2006
how would a dual system (done properly) hurt performance?
April 8, 2006I was thinking the same thing as radioflyer,I think a dual exhaust would really help if it was done properly.It shouldnt hurt anything at all.
April 9, 2006I guy I work with put true duals (flow 50's) on his 8.1 and actually lost mpg. Think he didn't have enough backpressure!
April 9, 2006Ithink thats what he was talkin about but I dont want to spend 400 bucks to find that out. so thats why I was thinkin just a muffler