Well, well, well. I took another look at the muffler and it wasn't constructed like I though. Internally, I only had about a 5/16" square hole that everything had to pass through. I wondered why it still didn't sound like a chainsaw and was still hard to hear the pop when starting. Not any more! This little bugger was hard to uncrimp. I removed the internal baffle. But that's not where the restriction was. Check out the pics below for details. It now sounds very healthy with a nice pop at idle.
Wow. Did this ever turn it loose. It proves a point that no matter how well the engine is built inside, it has to be able to get out. I picked up another 1K RPMs and am now turnin 14,800. It also completely anhialated my ported MS180 now! The fastest time my 180 turned last time out was 10.4. Today the best was 11.65 at 14,300 RPMs. The log is getting bigger as I go. The Redmax turned an amazing 8.30! Torque to boot too.
I filed the Redmax chain as I do all my lopro chains. Uneven rakers is what was causing it to be jumpy. The 180 is about 4.5% faster with .050 chain than it is with this .043 chain, but I don't have that bar and chain here. Still, the Redmax is way faster. I wonder how it would stack up against a MS200 now. Pro built, half the price!
Today, the Redmax is now an amazing 28.84% faster than the MS180. If you took the faster time of the 180 from a couple days ago, the Redmax is still 20.2% faster. Give the 180 another 4.5% advantage for the .050 chain and the Redmax is still 25.4% faster. I'm impressed to say the least. I sure wish I had a time with a good muffler mod on the saw stock now.