Hey, I have a forty eight sportster that I'd like to get shot of the stock air cleaner and tune with V&H FP3. It came with Vance and Hines twin slash 3" slip ons, and i don't know if I need to upgrade to a full system to get some improvement beyond looks and don't want to wreck the engine. Ive talked to a couple of different service guys at my local HD dealer. One of them said you can't stage one with mufflers and the other said you can? Searching on line I have also found the same conflict.

Can someone please clear this up for me. Can I tune with FP3 and upgrade the air cleaner, whilst keeping the slip ons? Will this do any damage in the long run? Thanks, True.

 

Of course you can. I have the 3" slash slip ons with DK Custom air cleaner and powervision tuner. Runs great. I removed my baffles and installed DK Custom Torque inserts.

Oh yeah, welcome to the forum.

 

You can absolutely do this, and it won't do any damage in the long run whatsoever. We've got tons of customers riding everything from XL's to Touring models with just slip-on's, A/C, and an FP3

Bryan
Brand Manager Electronics

 

Thanks for creating this thread. I am actually almost in the same boat. I have an Arlen Ness Stage 1, I just ordered a set of straight shots slip ons. But I do not have the FP3 or any other type of fuel management for my 1200 Sportster. So should I hold off on installation or will I be ok with this set up?

- G

 

You should get your fuel management before. My touring machine pinged bad after AN and slipons. Tried going cheap with xieds and never solved. I went with the fp3 and all good. If you plan to do cams you may want to go with something proven for dyno tuning; the fp3 pro is advertised for it but not proven accepted by the masses yet.

 

Thanks so much for the input~!!!

- Gamma