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Author Message   Tomtower Posted on Sunday, March 23, 2008 - 07:14 pm:        I just installed A standard Drummer yesterday, With A K&N air filter, stock ECM. Am I going to have any problems with the stock ECM running to lean or any other problems? By the way the Drummer sounds kick a A$$ And it seams to be running as good probably even better than before, Although I just wanted it for the sound because the bike was running plenty good for me like it was before. I just didn't like the sound I do now! The bike is A 2007 ULY. 10000 Miles on it.   Xbswede Posted on Sunday, March 23, 2008 - 08:06 pm:        It will work fine. Many run Stock.   Tomtower Posted on Monday, March 24, 2008 - 07:59 pm:        Ok thanks, is any one running a Drummer With A K&N air filter, stock ECM? If so any lean running problems?   Johnboy777 Posted on Monday, March 24, 2008 - 08:21 pm:        the ECM via the AFV will adjust to give you the proper fuel ratio (w/in its pre-set parameters) - the reason folks like to use a custom EEPROM or a race ECM is that the fuel maps (among other things) are different and can take advantage of a freer flowing exh. sys. you won't run too lean and hurt the engine if that's what you're getting at. the stock ECM has built-in safeguards (skip fire for example) to make sure that won't happen. call kevin, if you're concerned. .   Froggy Posted on Monday, March 24, 2008 - 10:32 pm:        I have the drummer with stock ECM and stock filter on my XB12SS. It is perfectly fine. I will be swapping in my Race ECM soon along with a uber filter and open airbox kit.   Tomtower Posted on Tuesday, March 25, 2008 - 07:18 pm:        Froggy Thanks for the info. Let me know how the race ECM works out.   Tomtower Posted on Sunday, March 30, 2008 - 01:39 pm:        Any one else running A drummer with A stock ECM ?

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