03-17-2019, 06:38 PM | #1 |
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Is Keeping Exhaust open bad?
Hello all,
I have a question... Does keeping the exhaust open effects the performance or anything else on my M4???? Dont know if it makes a difference or not, but I have the MPE....Thanks for the responses in advance... V/r, Jose |
03-17-2019, 06:40 PM | #2 |
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