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Discussion Starter · #1 ·
I recently had a STAGE 1 kit installed on a 2002 Twin 88 EFI engine. Runs okay but I noticed a quick pop or crack from the exhaust if accelerating hard to moderate and releasing the throttle to shift gears. Normally occurs at lower gears. The noise is not a loud backfire but a very noticeable pop or muffled crack. Riders next to me have noticed it as well. I took the bike back to the dealership and was told by the service manager that this was normal for bikes with the Stage 1 Kit installed. Is this true or am I getting a line of BS?
 

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Infidel
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ajaxn47,

I just had Stage 1 done on my 02 RK (SE breather kit, SE slip-ons for FLTs, reflash) on Friday.

My bike makes a cool burbling sound on deceleration with an occasional pop (again only on deceleration). I found that I could stop the "pop" by completely releasing any twist on the throttle.

Regards,

wyo
 

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I hate to say this but my bike is an '01 EFI and makes the same noise on deceleration with the stock mufflers - only its more "muffled".
 
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