T/S subject
Greetings, new to the forum, but not the liner just so I could join into this discussion. I have played around in this area for a long time with my 06 liner, my brother in law's, and a friends. How surprised was I when I found out that my former 102ci Warrior with BAK, PCIII and Street Sweepers (not known for speed) would go faster than my new Liner. Talk about a kick in the nads for the new ride... Was it the calibration of the speedometer, after all, they are known to come from the factory off +/- ~10 MPH's anyway? I'll never know for certain, as at the time I did not have a method to capture it via GPS device. I also got rid of the Warrior for the Liner so any true comparison now is not possible.
What I have found was the set up of the liner plays a big role and I've had three Liners to compare. It goes with stating the obvious, that lean and mean will get you more speed. Since my bike already had the HK 3" Big Straights exhaust with PCIII installed before I took delivery, I had to resort to my brother in law's bone stock '06 Roadliner for an OEM baseline. My other friend, also had an '06 Roadliner and he came off sport bikes, his last a ZX10, so we were really interested in maximizing his speed. He was interested in more noise as well so he chose an HK Roadburner 2 into 1, PR BAK, and PCIII. Since my original purchase of a Roadliner S, I have added a tremendous amount of weight with a short OEM windshield, MS lowers, OEM bags, Lindby highway bar, saddlebag guards, chrome fender tips, etc. which was all extremely detrimental for max speed. Probably loosing a good 5-10 MPH with all these additions but the windshield also allows greater rider control at higher speeds so there is a trade off. Heck, it was all worth it, as I can sure ride in comfort now and look good while doing it.
I also have the 3" Big Straights and while not known for speed either, but by adding Smart Partz baffles, it gave me back some of that low end grunt and ability to hear my ipod with some clarity. There are those that argue for keeping exup, but you know, shedding the weight of that stock can is quite significant and should not be overlooked. I did not purchase a BAK for my Liner, only a K&N in the stock airbox, aftermarket exhaust, and PCIII. I did not add the BAK to keep engine noise down and try to maximize MPG's since I planned on extensive riding. Too bad 35K miles later, I cannot stop twisting the wrist so much to actual fulfill that plan for fuel efficiency, but hey, it's about being a hooligan anyway...
So after all this babbling, here's what I can best determine. You do gain more top end speed with the correct fuel map loaded into the PCIII. The bikes tend to lean out at high speeds so dumping more fuel raises the ability to run higher RPMs in fifth gear. The stock ECU, CO2 sensor, catalytic converter, closed loop system is designed for emissions control not for speed. By opening the loop, bumping up the fuel to run richer at certain RPMs/TP's it really wakes the beast within. It's not the ECU that's speed limited but more like the quantity of fuel delivered. You are also not going to get there using the canned maps offered on the Power Commander site either, as each had it's issues with hesitations at certain spots in the map (RPMs/TP). You also need to calibrate the throttle position to ensure you are within the correct range on the map. In the end, my friends liner with the HK Roadburner 2 into 1, PR BAK, and PCIII was the most responsive and had the greatest pull at all speeds. With a strong wind at your back you were going to see 135, maybe approaching 140 if lucky, screaming down the highway, and it would have been one heck of a race against that old Warrior. To go any faster, you were talking about sending your engine parts to Patrick Racing and boring it out...