Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[Red an]

First off, this forum is great. Good and plentiful information and great people. Here goes. My new sled is  2013 CVO RK. I replaced stock exhaust with Jackpot Headpipe & Mufflers. (if you could call them mufflers). They sound Freakin AWESOME!!! I then took it in for the 1K service and had dealership install SE Race tuner and set it up on the dyno. Its making Roughly 90 HP & 110 FT/LBS. I'd like to be closer to 100 & 115+ with a much flatter torque curve. Experts out there have any ideas?
Thanks in advance

[05Train]

I think it's your tune.  Your combination should have no problem making your target numbers.

[Midnight Rider]

Unless you're racing, HP numbers are kind of irrelevant, as maximum HP takes high RPM's to achieve.  Most HD touring bike riders live between 2200 and 4500 RPM, where the maximum TQ resides.

[grc]

Try a different place for a better tune, but don't expect miracles from a simple pipe change.  And you won't get a flat torque curve with the stock cam, which is all about bottom end grunt and a rapid drop off up top.

Btw, that chart you posted is just a bit strange.  Did you notice that the before run was dated 2/2/2012 and the test conditions were vastly different to what was reported for the final run? 

Jerry

[FlaHeatWave]

To get your target #s You will probably have to go to cams / compression or both.

You didn't say how the bike runs now or the improvement other than sound??

[Red an]

Midnight Rider: your point is well taken. it is the flat torque curve I'm lusting after, not horsepower. So much. Any advice on cam's? Compression wont change at this stage.

grc: I didn't notice the date - weather discrepancy. I know it was on the dyno by 10am 11/26 and I was charged 4 hrs total. do you have a best guess as to how this went down. Are these even MY numbers? is the question that comes to my mind. I hate always being the suspicious one

when I picked it up it started, idled and overall ran better (smoother). it was dark and cold so a proper ride is still yet to happen. overall I'm happy.
Thanks,
Rod

[Midnight Rider]

Midnight Rider: your point is well taken. it is the flat torque curve I'm lusting after, not horsepower. So much. Any advice on cam's? Compression wont change at this stage.

grc: I didn't notice the date - weather discrepancy. I know it was on the dyno by 10am 11/26 and I was charged 4 hrs total. do you have a best guess as to how this went down. Are these even MY numbers? is the question that comes to my mind. I hate always being the suspicious one

when I picked it up it started, idled and overall ran better (smoother). it was dark and cold so a proper ride is still yet to happen. overall I'm happy.
Thanks,
Rod

Typical numbers that I've seen on this forum from changing the pipes to something like a Fullsac X pipe and 2" cores in the stock cans are in the 95HP and 114TQ range, give or take a couple of points.  Not always, but LOUD sometimes actually decreases the numbers...it's all a compromise to some extent.  The stock cams do fall on their face above 4K, but they really are not bad from 2200 to 4000 from a purely TQ point of view.  It depends on your riding style.  There are many here who are more well versed in cam choices than I am, so I defer to their expertise.  I generally never messed with the motors on my bikes...I spent my money on handling issues.  I know that GMR (he is a vendor here) has a nice cam that produces nice TQ without a lot of work.  There are others too.  I'm sure those in the know will chime in with suggestions...