I have them and like them. They are pricey but did give me more torque. I have 90 hp and 105 ft lbs of torque with a Power Commander and the factory swept pipes. I had mine dyno tuned. Personally if I had the 08 and was spending the $$$ on torque tubes I would buy the Power Commander 5 AND the Auto Tune. The auto tune lists for $250 and that is almost what you would spend on a dyno tune. It would be better than a dyno tune and any changes you make it will automatically adjust for. DO YOUR SELF A HUGE FAVOR AND GO THIS ROUTE, just my 2 cents.
2007 Jackpot Premium
Too much chrome and add ons to list.
:soapbox:Ban "TAR AND CHIP"