I know these are not the greatest performing 2:2 or drag pipes, let alone even close to a 2:1 system. I'm just curious to know how much will these restrict my build in actual numbers? Or percentage power/torque lost vs a let's say rb racing lsr 2:1 setup. I really love my supertrapp exhaust system but if it's going to drastically kill my build and prevent BIG gains I need to explore some other options. I kinda like the rb racing lsr 2:1 just trying to justify it. I know a good exhaust tune goes a long way if youre trying to top the charts but I'm just a street cruiser. 98" ported heads 1.90intake 1.63exhaust, gear drive ss.583. 9.8:1 I know this is talked about a lot but I couldn't find much on the rb lsr 2:1 while searching. Thanks. -Nathan.

 

I had the rb exhaust 2 into 1 on my buellster build and it was a great sounding and great performance i wanted it but did not want to pay the high price i lucked out found one on eBay it was a diff. yr i called rb and bought the correct mounting bracket for my yr. its a great pipe

 

Misread the article, removed post..sorry..


A supertrapp 2-1 with tunable plates is the best for tuning the pipe to your motor. Thunder header is a good performer as well,I have an RB lsr 2-1 c-style and lost my low end torque till about 3200 rpm and then it really kicks in all the way to 6500..