I bought an 04 RK Custom, previous owner had a set of Hooker Tuneable exhaust put on but doesn't know about any FI upgrade.

Is there anyway I can tell if the computer has been upgraded or not?

JP

 

Did it also have an aircleaner change to an SE or the like? Back then, with pipes and AC only, quite often dealers merely did a stage 1 download with no other tuner. If it gets hooked up to a DT at the dealer, they will be able to tell if there was a download. If it runs good and plugs look good, I wouldn't worry about it. When you go to further upgrade, buy a tuner.

 

Yes it does have an non-stock air cleaner. It has no back plate and a tapered K&N style filter element.


It does run great, sounds very deep and growly with those Hookers. The only thing that concerns me is that it crackles and pops a lot on decel. Is that normal?

 

Check the plugs. See what they look like. Crackle and pop could be a leak or it could be a tuning issue.

 

how high will it rev?- I think the limit was set at 5500 on that model ( or maybe 5800)...if it revs to 6K then you know a download has been applied.