LANCER
Serious Thumper Alliance Member
Offline
Savage Beast Performance Parts
Posts: 10668
Oklahoma
Gender:
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I posted my impression of the MAC system a while back. Basically, the 1.75" ID header is too large for even a modified LS650. They need to bring it down to a 1.6" ID for modified and 1.5"ID for stock engines. The muffler does have a pretty good sound and works well. The muffler is worth buying but not the header. A stock header works better then theirs. The S40 I tested it on has a stock carb that has been jetted and a Stage 2 camshaft, and it actually lost power with the MAC system.
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