Bike Talk motorcycle forum

Hi Guys,
I have just brought my first Harley ( after 32 years of Japanese bikes ) its a 2007 FLSTC 96 cube Softail, I have replaced the stock Catalytic slip on mufflers and put on a set of aftermarket ( I live in the UK ) I noticed that there is a spring loaded cable operated butterfly valve located in the back cylinder header pipe just up from the muffler, I imagine this is an emissions flap, my question is, can I just disconnect the little servo cable and wire the flap in the open position relieving the backpressure on the rear cylinder.

Anyone Know What The Tention On A 03 883 Drive Train Should Be?

Neither mine nor my wife's bikes have tachs. Is there a portable out there for use during maintenance? I'm sure some tuning issues would be easier with one than using my ear (which my wife claims are for decorative purposes only).

Is it possible to use/modify a portable tach that was for automotive 6/8 cyl engines, so that it would be fairly accurate or easy to interpret?

I am considering a K&N RK 3909 "kit" for my '04 carbureted FLHRS. Will this
require that I rejet, or, just bolt on and go? Carb and exhaust are stock.
Thanks, as always, for your help!
RB

hi everyone hopin for a great ride