where did you get the baffle? been trying to find one but nobody around here can seem to tell me where i can buy just a seperate baffle...mine gives me a headache about an hour in...need to quiet it down a bit

 

I've got a D+D on my bike now, how does this compare in sound, it's almost as if that thing gives me absolutely no noise reduction from open pipe at all.

 

That seems like a fair statement of the GP shorty pipe for sure!!!

 

I meant the D+D Doesn't. Granted I don't mind the noise, but it can quite easily chew through a helmet. I've managed to not **** off a cop in 24K miles, however, if it's not any louder, I'd consider going the shorty.

 

yall must have some blown out pos D&D cans, mines not near as loud as other pipes I've heard.

 

Thats quite possible, I've got a vance and hines on my suzuki, and that thing screams too. But I bought the bike with a d+d, so thats the limit of the experience i've got with them.

 

i cant imagine those gp shorty pipes being too good on the valves

 

This pipe would have no effect on the valve at all. A more open exhaust reduces backpressure which allows for more power. BUT all street engines are designed with some backpressure in mind so that exhaust can be muffled to reduce noise. By usuing the Shorty pipe which is basically a straight pipe, the back pressure from the muffler is removed. Altering the back pressure only effects the fuel curve which in most cases can be fixed by jetting unless a lot of mods have been done to the engine which then requires a lot of tuning to get a new curve in place for optimal performance.

The gp pipe IMHO helps top end a lot, since common sense would be that an engine flows more air at 10,000RPM than at 2,000RPM the open pipe allows for better breathing at the higher RPM range since it does not allow exhaust to get caught up in the pipe. But i feel that it does bog the lower RPM's tho. Since not as much air is flowing and the exit speed of the air from cylinder to header in not as fast as it would be in the higher RPM range.

 

put a short piece of 8-12 inch pipe on your lawn mower for a muffler with no back pressure then tell me how those valves look so yes less back pressure will toast valves in time without the bike properly setup for that "type" of exhaust. you will have too richen up the carbs but still will loose torque and will only gain in the very very top rpm. back pressure serves a much more important purpose then just making bikes, cars, trucks etc quiet.

 

Odd thing is, my grandfather had some old POS mower he did that to, it's been that way for as long as I can remember, which would be at least 15+ years, I'm gonna tear the head off of it, and look, just for curiosities sake.