Here's my 361 Big Bore with an 044 carb. This is the prototype P&C that I tested several months ago. It's running great. This is my very first experience messing with a pipe on one of my saws, so it's all new to me.
Levi, aka Breymeyerfam, was kind enough to send my his pipe to try out on my saw. My saw wasn't ported with a pipe in mind, so has higher transfers with less blowdown than Levi's. A piped saw likes more blowdown. Also, my saw has 6 more cc than his OEM P&C. What I'm trying to say, is that this pipe wasn't built to the specs of my saw. Reguardless, my saw still responded reasonably well. I don't think you can expect a whole lot more than 15-20% by just bolting a pipe on a muffler saw. Levi got 17% with this pipe, and I'm getting 14%.
Now here's what's weird. This pipe was kind of peaky on Levis saw. On mine, the powerband feels wider than stock, and not peaky in the least. I'm pushing hard on the saw in the vid. It needs more chain, and/or an 8-pin rim. Definately not what I expected with a pipe.
Tuning is scary with this thing. It runs best tuned leaner than what I wanted to give it. Remember how Levi posted his first vid with it and we told him it was running too rich? I was doing the same thing. I finally tuned it leaner where it ran best and it seems to be fine. I did a plug chop at WOT in the bottom of a cut, and the plug looks fine. Just part of learning how to deal with a pipe I guess.
I took the best of three cuts. With muffler it was 6.30, and with pipe it was 5.40, for an improvement of 14%.
Anyway............here's the vid.
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Levi, aka Breymeyerfam, was kind enough to send my his pipe to try out on my saw. My saw wasn't ported with a pipe in mind, so has higher transfers with less blowdown than Levi's. A piped saw likes more blowdown. Also, my saw has 6 more cc than his OEM P&C. What I'm trying to say, is that this pipe wasn't built to the specs of my saw. Reguardless, my saw still responded reasonably well. I don't think you can expect a whole lot more than 15-20% by just bolting a pipe on a muffler saw. Levi got 17% with this pipe, and I'm getting 14%.
Now here's what's weird. This pipe was kind of peaky on Levis saw. On mine, the powerband feels wider than stock, and not peaky in the least. I'm pushing hard on the saw in the vid. It needs more chain, and/or an 8-pin rim. Definately not what I expected with a pipe.
Tuning is scary with this thing. It runs best tuned leaner than what I wanted to give it. Remember how Levi posted his first vid with it and we told him it was running too rich? I was doing the same thing. I finally tuned it leaner where it ran best and it seems to be fine. I did a plug chop at WOT in the bottom of a cut, and the plug looks fine. Just part of learning how to deal with a pipe I guess.
I took the best of three cuts. With muffler it was 6.30, and with pipe it was 5.40, for an improvement of 14%.
Anyway............here's the vid.
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You da MAN!!! 
