Last month we left off after wrapping up the basics of the ProCharger installation on our 2012 Road Glide. This month we’re going to show you the incredible gains we achieved by adding the ProCharger to our 2012 Road Glide that was juiced up with Harley’s Screamin’ Eagle 110ci kit.
Adding a monstrous power adder necessitates the installation of a freer flowing exhaust system because after all, an engine is nothing more than an air pump. Of course, spark and gas play a major role, and yes, lubrication plays a factor, too, but in essence air goes in so air must come out. To help get the air out we decided on Vance & Hines’ Monster Round slip-on exhaust system ($649.95) attached to Vance & Hines Power Duals head pipes ($519.95). The Monster Rounds feature a 4-inch diameter slip-on design available in either chrome or black powdercoat and come with CNC-machined end caps and a cool stamped Vance & Hines logo.
The Power Duals feature a unique power chamber that incorporates an interesting crossover design to create the right amount of backpressure to work well with stock engines, performance engines, and especially supercharged engines. The duals are offered with either chrome or black and work with ’09-later Harley-Davidson Touring models.
In the electronics department, ProCharger uses the Power Commander for controlling the serious boost in power—mainly by adding more fuel to the serious air increase. Plus, DynoJet worked extensively with the supercharger manufacturer in order to get the tuning just right, especially when installed on hopped-up engines like our Road Glide 110 here.
Follow along as we show you the installation of the Vance & Hines exhaust setup and Power Commander, and how well the techs at Huntington Beach Hogs & Choppers dyno-tuned everything to get the bike running tip-top.
1. The Monster Round exhaust system was ordered in the black powdercoated finish because it obviously matches the murdered-out Glide.
2. This specific Power Commander was tailor-made to ProCharger’s specifications. Because such a large amount of air is being stuffed into the 110-inch Twin Cam, the addition needed to be compensated with the correct amount of fuel via a fuel tuner.
3. The bike had been outfitted with a set of Screamin’ Eagle mufflers and black heat shields after the 110 punch-out. The bike owner was dead set on keeping with a true duals look so ProCharger recommended the Vance & Hines Monster Rounds for the specific setup. We removed the SE headpipes and mufflers and got to work getting the Monsters in place.
4. As you can see here, the crossover pipe is mounted to the back of the oil pan here. Two top fasteners secure the mounting bracket to the pan, and two more bottom fasteners secure the crossover pipe to the bracket.
5. We removed the oxygen sensors from the SE pipes and reused them—after applying liberal amounts of anti-seize—with the new Power Duals.
6. With the O2 sensors in place, we test-fit the Power Duals to the exhaust studs on the cylinder head exhaust ports.
7. Next we mounted the Power Duals mounting bracket in place and secured the headers at the cylinder heads and the mounting bracket.
8. We installed the right side Monster Round to see how she looked. Taking a step back, admiring the craftsmanship, we knew we made the right choice.
9. We followed that up by mounting the left-side muffler in place, then we began installing the black powdercoated heat shields.
10. We reinstalled the tank and plugged in its fuel line in order to get ready to fire the bike to life. But first…
11. …we needed to hook up the supplied Power Commander, which is located under the seat for the 2012 model. It installs easily between the factory ECM and main harness. After installing the Power Commander on the bike, we hooked up HB Hogs PC computer since it already had the specific maps and tuning agents needed to make the Power Commander deliver the most optimum air/fuel mixture given the power addition. Once that was determined, we rolled the bike off the lift and installation was complete. We had to take the Glide for a spin to feel the seat-of-the-pants power that we’d felt on other models outfitted with a supercharger we’ve tested. Sure enough it didn’t disappoint in the slightest.
12. After a test-spin, and with a huge smile plastered on our face, we unwillingly brought the bike back for some pulls on the dyno to see just how well it fared. After a few runs we topped out at 145.95 hp and 127.59 lb-ft of torque. A stock 2012 Road Glide puts out around 75 hp. With the addition of the 110 and the ProCharger, we’ve gained almost a 50 percent increase over stock. And best of all, throttle response is crisp and immediate. And burnouts are even easier than ever before. Plus, the murdered-out Glide just looks badass.