LowRiderGhost write:
While I haven't yet had the opportunity to change my current 2005 FXDL's Intake / Exhaust system, I've had a lot of good experience using the Python II Dual Exhaust (Tapered-Style) on my previous (Shovelhead) FXS/FXSB Low-Riders. After going through the usual amount (just as everyone does) of Drag Pipes (with and without baffles) and/or Headers / Mufflers / Air-Cleaners / Jetting / etc., the Pythons seemed to be best overall, with the least amount of headaches! Using standard jetting (as confirmed correct after a series of 'plug color checks' - old school routine) the Python II's did actually improve both performance and gas mileage - sounded better but were still within 'legal' sound levels (at the time). These were one-piece seamless assemblies without a crossover tube, and had 'Anti-Reversionary' baffling added up inside the headers themselves.
Now the current manufacturer (LeMans Corporation) is touting their latest Python III models. Look about the same to me (just at a much higher price of course!). No more mention of the previous Anti-Reversionary feature (and these do include a 'hidden' crossover) - so whether or not these will work as good on the single and twin-cam Blockheads as they did on the Shovelheads remain to be seen. But as I'm a believer in 'going with the devil you know' no doubt I'll probably be trying out a pair of these new ones in the future ('goodie fund' allowing!).
LRG
Hey Ghost, I ride a newer FXDX, 2004. Mines injected.
I went to RB Racing 2 into 1 exhaust. If you haven't seen them or heard of them, check out their website. A lot of information there about many motorcycle upgrades.
I opened my intake with a simple round exposed filter element from a company called Crossover in Somerset, WI. ,It's called the Maliair and they also have a website.
This exhaust/intake combo works wonders on my stock, (so far, I'll rebuild it if it blows), twin cam 88.
I also elected to go with a Revtec Fuel Optimizer that adjusts the amount of fuel into the system as I ask for it, (read: twist the grip)
This thing stays in tune. I got the same mileage at sea level as I got at 11,000 feet without any adjustments on my part.
I gotta admit, it ain't old school where I do all the work myself anymore, but I still change my own fluids and tighten loose nuts and bolts. Your set-up sounds good. And you're right, the new and inproved version is better than last years new and improved version. They get rich, we have fun riding.
Ride Safe