Installing Cross-Under Pipes and More - Making Power and Sweet Sound | COBRA PowrPro Self-Tuning System

09. Jon then installed the cross-under pipe to both the header pipes. The system looks like it’s two separate pieces but take a closer look (arrow) and you can see the collector chamber.
09. Jon then installed the cross-under pipe to both the header pipes. The system looks li
10. Jon placed both the mufflers onto the head pipes until the mounting holes aligned with the hangers. He fastened the mufflers using the stock mounting hardware but did not tighten. Jon rotated the mufflers as needed so they were level with the ground and parallel with each other.
10. Jon placed both the mufflers onto the head pipes until the mounting holes aligned wit
11. Once the mufflers were in place and lined up, Jon tightened the muffler clamps and the mounting bracket.
11. Once the mufflers were in place and lined up, Jon tightened the muffler clamps and th

12. Jon wiped the pipes down to clean and remove any fingerprints or oils. He then installed the heat shields.
12. Jon wiped the pipes down to clean and remove any fingerprints or oils. He then instal
13. Jon went back over every bolt, checked all clearances and alignments, then tightened and torqued all the mounting bolts to factory specifications.
13. Jon went back over every bolt, checked all clearances and alignments, then tightened
14. Next, we moved on to the Fi2000 PowrPro tuner. The unit is about the size of a deck of playing cards...
14. Next, we moved on to the Fi2000 PowrPro tuner. The unit is about the size of a deck o

15. ...so all Jon had to do was remove the seat and the Fi2000 sits atop the stock ECM with plenty of room. A small piece of double-sided tape was used to mount the unit. The rear of the gas tank was lifted up off the frame a bit to allow the injector wires to be routed to the throttle body.

16. The Fi2000 uses the same connectors as Harley does so it was as simple as plugging in the black-to-black and gray-to-gray.
16. The Fi2000 uses the same connectors as Harley does so it was as simple as plugging in
17. Finally the PowrFlo Air Intake System was added. You can see from this cut-away photo how the PowrFlo is more than just style but designed for improved airflow and performance. The air filter allows more air than a stock filter and also has a built-in venturi to help force more air.
17. Finally the PowrFlo Air Intake System was added. You can see from this cut-away photo
18. The PowrFlo Air Intake System kit comes with a backing plate, air filter, breather plate, gasket, and a chrome cover with removable screen.
18. The PowrFlo Air Intake System kit comes with a backing plate, air filter, breather pl

19. Jon mounted the backing plate to the breather plate then to the manifold. There are two breather holes at the top (arrows) where the breather bolts from the heads will connect to the plate with two rubber hoses.
19. Jon mounted the backing plate to the breather plate then to the manifold. There are t
20. The air filter was put in place followed by the cover.
21. Lastly the saddlebags were installed back on the bike along with the seat. We fired up the bike and checked for any exhaust or intake leaks. The bike was removed from the lift and we headed out on a testride so the Fi2000 could tune itself. In just a few blocks we could feel a difference in how well the bike accelerated. We headed back to the shop so we could run the bike on the dyno.
21. Lastly the saddlebags were installed back on the bike along with the seat. We fired u

22. With the bike on the dyno, Jon strapped the bike down and started to make a few passes. Three different runs all pulled the same numbers from a roll-on run to a full pull on the throttle. The pipes sounded good with a thundering bass ring that was not too loud.
22. With the bike on the dyno, Jon strapped the bike down and started to make a few passe
23 After three runs, the ’10 Road Glide pulled 78.1 hp and 89.7 lb-ft of torque. These are solid gains of 10 hp and almost 12 lb-ft of torque for what was a bolt-on system without any tune time. By just riding the bike it was tuned and ready for the road.
23 After three runs, the ’10 Road Glide pulled 78.1 hp and 89.7 lb-ft of torque. These ar