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162 Posts
I used a 1½" holesaw with a 12" extension and removed the end of the secondary chamber, and as it was mentioned my 950 now has a pleasingly low, robust rumble
. Compared to the stock sound, the level is now over twice as loud as it was but will not wake up or upset your neighbors
. Since the stock exhaust has 2 chambers the primary chamber still gives adequate muffling but man oh!! man the sound you'll get by holesawing that stock exhaust. You won't want to spend $450.00+ dollars on after market pipes after hearing it
. I don't think that I'll drill the air box at time, I'm a little leary about a too lean a mixture the ECU won't compensate so I'll do more research on that matter before I modify the air box.