I've had that IAV on my Cross Country for years. It doesn't work. The only thing that it has ever done on my bike was lower the idle as you screw the valve in. I fought the backfiring forever. Did all the "fixes" that everyone tells you to do (exhaust header gaskets, rubber boots, etc). I have basically everything short of a big bore kit that Lloydz sells on my XC. The IAV is the only product that I think is worthless.
In the end the only thing that fixed the backfiring or decel popping was getting the bike dyno tuned by a tuner who knows what he is doing with Victory motorcycles. It needs to be a tuner experienced with Victory motorcycles who understands how to remove the backfiring. IIRC it's caused from a lean condition when you close the throttle. So they have to go into the power commander and add fuel at the throttle positions where the back firing typically happens.
I copied my original post from theVictorMaryCharlie.com and put it here. The steps sort of assume a person has read the service manual, sorry. Others can add their own tricks and tips.
1. Don't try to do this on the side stand, Get the bike upright. Using a lift is preferable.
Also have a buddy...
Ok I’m new to the forum and can’t wait to learn more! Uh anyways so 25,000 miles on my 2016 cross country 8 ball and now my right fork is leaking! Cool... only problem is I can’t fine a kit that will let me do seals and dust covers. So any help would be great! Thanks
My low beam HID needs to be replaced and CR is no longer in business so I want to put a LED. My problem is that there are so many to choose from. Anybody have any suggestions what to do or which bulb to buy.
The AFR+ is a great tuner. In fact, I think it's better that the PCV (if you're not getting dyno tuned) without cams. The tuner was pretty spot on through the gears, right where I wanted. I was running the ATS +6, Hi flow filter. Once I put cams in, it still works pretty good but it's too rich...