i got a yoshi slip on first, then i got a PC3 and took it in and got it dynoed. My bike runs great

 

So how much power are you putting down?

 

The muffler effects the amount of back pressure in the exhaust.

If there is less back pressure the exhaust flows better however also more unburnt fuel from the exhaust flow out, which may cause back fire and at higher rpm more fuel is lost causing a little bog

Some people don't notice it, some do, some say its insignificant. I feel it. So that's why i have both

 

Complete guess based on typical numbers.

Hes probably putting out around 98 horsepower at the wheel, +/- 2hp

 

I just downloaded a map onto my PCIII over the last weekend and have been riding all week... the difference is night and day. I didn't think I was guna notice but I did. I got an Akrapovic full system and had PCIII but no map. After the map the bike runs SMOOOOOOTH. Improved my gas milege by alot (I have been getting 92~98 miles before res. bar now I'm getting 110~115). So my personal experience with PCIII, I recommend it. Not really for the performance/speed gain, but to make your bike run smoother. It helps.

 

Hey guys thanks a lot...I justput the Yoshi pipe on this week., looks great.The PC is next, from what Ihear its a must have to have the bike run the best.