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I guess I'll stick my neck out here to get my head taken off. Before I put the full Akra system on my bike, by friends SuperDuke would pull out 3 bike lengths and stay there. After the exhaust install he's half a bike length behind me and cannot pass me. I definitely want to get an RB or a Power Commander if one ever comes out to even further optimize the gains, but to say you get nothing but sound without one has not been my experience. This buddy is the most hyper-competitive person that I know and I can assure you that this test is conclusive as every weekend we have to do a retest because he's made some change. Just my worthless .02.
Gerry
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