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post #21 of 21 Old 08-09-2015, 07:56 PM
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Originally Posted by Subike View Post
How many holes did you drill?
Have you a pic of the holes we could see?
Did it effect the performance in any way?

I did have some pics of it drilled out, but have since deleted them after I installed my loose cannon muffler...

however, here is a partial pic...sorry for this!

I looks like I drilled (7) 1/2" holes in the back plate.

it spits out some fiberglass, but after a while that'll ease up.
it may also get louder as it spits more out though.

no noticeable positive performance change, just a noticeably deeper sound, and a little decel popping, but not a lot. not any more than my firebrand muffler has now.

if anything, however, I did seem to notice a little less torque on the bottom end of the rpms, but nothing really big....but this might not have been the case, I don't know for sure. as far as top rpms, I don't rev it that high most of the time, so I cant say either way for that.

but if I had to guess it would have likely had a bit more umph on the top end of the rpms...that's normally the case with a more open exhaust.
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