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General Category >> Rubber Side Down! >> How many holes did you drill in your baffles?
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Message started by rkutzner on 08/06/05 at 18:58:40

Title: How many holes did you drill in your baffles?
Post by rkutzner on 08/06/05 at 18:58:40

For those who drilled holes in their stock muffler rear baffle, how many and how big did you drill, how does it sound, and what is your setup?

I have a stock K&N, white spacer knocked down to the thickness of 2 #4 washers and a 152.5 main. Runs really strong but I need a little more NOISE til I can afford a Raask or Supertrapp.

Title: Re: How many holes did you drill in your baffles?
Post by bobo383 on 08/06/05 at 19:52:56

I cut the whole rear baffle out, and lost most of my low-end grunt; but it was loud.

Title: Re: How many holes did you drill in your baffles?
Post by rkutzner on 08/07/05 at 04:20:15

I'm not looking to go THAT far. I've searched and read about a few 1/4", 3/8", or 1/2" holes but nothing very concise about how it changed their jetting or how loud it was.

Decided to drill 2 1/4" holes, what a nice difference in exhaust note! Before it warmed up I could put 2 fingers over the holes to hear the difference at idle. Nice. May enlarge one of them to 3/8". Doesn't seem to have effected the jetting as I may have been a little rich to begin with at 2 turns on the mixture screw, spacer mod (width of 2 #4 washers) and the 152.5 main. It will be interesting to see what happens when the cooler weather comes on....will I still be rich enough?