VmaxSx600
New member
Ive hear there is a made on the single pipe for twins... where you cut right before it forks into the cylinders? correct me if im wrong but what is the deal on this mod?... does it make the sled louder? and how much hp do you gain? does it make the sled quicker?
start searching. It's in here somewhere. If I remember right it's removing 1/2" from the y-pipe. Good for 4 horse or so, but motor needs to run up around 8500-8600 to after the mod.
VmaxSx600
New member
I dont think im gonna do it then cuz im gettin a helix and turk told me to run it at 7600 rpm
yamaholic22
Active member
yea i wouldn't do something like that either unless you have access to a dyno, otherwise with a mod like that that has only been done by a handful of people you don't really know for sure where it is making its power and how it is affecting the rest of the power curve.
VmaxSx600
New member
Yea thanks for the info guys... i cant wait to get my helix in my sled and test it out