Has anyone done the 4 into 4 exhaust on a -4? and, if so, any issues on the install?
Thanks,
Ron
I just ordered a new 0360 system for RV4 from Clint. Larry V was very convincing that 4 pipes with 20 degree down turns was optimum. I had asked Clint if a 2 into one collector was available for my 0320 / -3 and he said combining pipes would reduce HP 15%. Larry also shared his experience regarding noise. He said a straight pipe pressure pulses interact with the fuse bottom and cause "drumming" due to pulse waves attaching to the fuse. Thus 20% down is preferred.
Has anyone done the 4 into 4 exhaust on a -4? and, if so, any issues on the install?
Thanks,
Ron