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Discussion Starter · #1 ·
At the dunes right now and decided to remove the the spark arrestor from the muffler.I can say that mod did make a difference in the low end and seems to rpm quicker. I am wondering if anyone has modified the restrictor plate? I know that on some motocycles that I have owned in the past drilling holes in them had a positive effect.
 

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Good question I was also wondering this. I wonder if anyone has remove the cat from the stock muffler and what the results were?
 

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Yeah, I would check your plugs for sure, you don't want to damage anything.. as expensive as this thing is I would flash that ecu anytime I am reducing back pressure...
 
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