Al Smith
Mac Daddy
I'd imagine with that modification it increased the surface area open by about plus 200 percent over original .
I've never seen a 201 but I assume the muffler is akin to the 200 .That being the case with the baffle plate screen in place the only outlet would be the rearward slot in the muffler .With the plate removed you get another exit hole .
Perhaps some alteration of that rearward hole to increase the size would be of benefit .
I did exactly same with one of my 200's but with the baffles removed plus other alterations I can't honestly say it helped or not .
I've never seen a 201 but I assume the muffler is akin to the 200 .That being the case with the baffle plate screen in place the only outlet would be the rearward slot in the muffler .With the plate removed you get another exit hole .
Perhaps some alteration of that rearward hole to increase the size would be of benefit .
I did exactly same with one of my 200's but with the baffles removed plus other alterations I can't honestly say it helped or not .