I have an 09 Nightster. I've decided to go with sic pipes: Diesel. I've yet to decide on which air filter to use or which fuel management system to use. I want to do this but I want to do all three at the same time. Pipes, Air Filter, Fuel management system. What are your thoughts? What would you suggest?

 

Being so short those pipes will be hard to get a clean, no popping, tune.
I do think the DK Customs 487 Air Cleaner and Power Vision would be a great way to go. Will save you money on the Dyno tuning with the PV.

 

I have some similar short pipes, but with a 2-1 collector, made from our Exhaust Builders Kit...see pic below-

I don't think you can do better than the Power Vision, click HERE to see details. You will get a free custom tune (map) to match your build, & a bunch of other stuff too, at the link.

I have run the 425 and the 636v air cleaner on it. If you are looking for the most possible power, the 636v can't be beat. But the 425 and 587 are right behind it.

LINK to A/C's

One other thing...with the sik pipes we have had a lot of Customers have good experience in gaining some good bottom and mid range power out of them by using the Thunder Torque Inserts. They are inexpensive, and very effective. Details HERE






Here's a short vid of the DK Sporty with the 636v and Power Vision...also has a TTI in the Exhaust.

btw, as you can tell, I like decel pop. Have it tuned for performance, but did not bother tuning the decel pop out...but it can be done if you don't like it.