Chainsaw Repair

The conclusion I've come to with the Rev Boost is that there is a lot of confusion.

My 545 and 550 were new this time last year.

My Saws appear to not have Rev Boost for the 550 just goes up to around 13,900 and stays there.

My 545 goes up to around 13,400 and stays there.

Now I have a near by friend with a older 550 and his seems to maybe go beyond 14,000 for not as much as a second and then the coil goes into limitation. His muffler is ported. This happens so fast is all you see is the tach go nuts above the high 13,000's. If it has Rev Boost, it is for less than the resolution of my Fast Tach.