Cut4Fun,
Thank you for sharing this site with me. I have noticed a few familiar names from AS. As such, I know I am in good company. I hope to learn alot. I do not have a camera to supply a photo of my Poulan Pro 4218AVX. I have recently rebuilted the 4218AVX with much help from Mike Sullivan who is also a member here as well as on AS.
To all the other members I hope to meet you and look forward to sharing what I can about the little I know about chainsaws. However, I am very interested in learning about saws. I have a questions for Poulan chainsaw owners, does a muffler modification place less stress on a saw? What are the benefits/drawbacks of a muffler modification to a chainsaw? Thanks, Islero 
Welcome.
IMO the muffler mod aids in a cooler running saw with more power and quicker cuts if done right. Dont forget to readjust your H side on carb richer and adjust L and Idle if needed after muffler mod.
What saw are you asking about? Pics of muffler etc?
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