CFR Exhaust

[Laudhog]

I have a set of CFR Exhaust on my 08 Street Glide, 103 Big Bore, Super tuner and my tech is telling me that my CFR's are not producing any back pressure, Therefore, he is having a hell of a time effectively dynoing my bike. He claims that my idling is out of whack and that he recommends a 2into1 exhaust but I really dig the very loud and deep sound that these pipes produce, they are awesome. Has anyone heard this before? or does anyone have any suggestions that might help me keep my CRF's........ very concern!!!

[enrique]

Do you have the stock headers or true dual? I have the cfr's as well.I have an 08 rkc w/stage1 and heavey breather.I started with just the cfr slipons w/stock headers at first and it ran fine but did start to stumble a bit.I liked these pipe so much that i went ahead and got the cfr dual headers.Once i added the headers i installed the pcv.Bike runs great no stumbling or anything like that.Have not dynoed.The cfr's are a very open pipe which is probably why not much back pressue.What you stated about the dynoing i think is very common with these pipes.Just to let you know the CFR dual headers are different than other headers i've seen in which these look exactly like the stock headers w/o the crossover.There is no bends or angles they go straight back into the slipons,and they appear to be narrower as well compared to other headers.Personally i wouldnt change these pipes for anything.

[big worm]

might want to try some torque cones. they should help with the back pressure problem.