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Dyno ChartsThis forum is for posting of your Dyno Charts. You will use a prefix to designate your Cubic Inches. When posting please include all model year, Cubic Inch and modifications in the thread title and in the body when posting your Dyno Charts.
Finally was able to get my bike Dyno tuned. It always ran a little hot so I thought I should get it tuned on a Dyno. I did my best with the PV but I'm just not to good with fuel injection.. Stage II heads, TW 5-6 cam, Supertrapps, Power Vision, 4.9 injectors,197 ccp. I find it a little hard to believe the numbers are lower than some cam only builds.. Thoughts??
Not sure about the numbers but it looks like a nice shape to the power. Are you happy with how it performs?
Thanks, Yes I'm very happy with it's performance.. it's hard to tell which one is actually faster my '98 Fatboy or this bike they both perform so well.. And in all honesty, I guess it's up to the guy that owns the bike.. If he's happy with it then everything should be great...
What I really find interesting about those two pulls that were done within a minute of each other but different gears 5th and 6th, is that 5th gear showed lower torque but yet carried out much better than the 6th gear pull.. I understand that it's a calculation between time force but thought that the 5th gear pull would show higher numbers throughout the entire pull.. It's something I always wanted to see a difference in and had the shop do those two runs for me interesting, isn't it....
Keep in mind that 5th gear overall ratio is 3.49:1 and 6 gear overall ratio is 2.95:1..
Last edited by 98hotrodfatboy; Apr 23, 2022 at 06:42 AM.
i''m kinda curious on this myself,,,,,A as mentioned the scaling is off....B there is only 1 AFR trace,,,,,,Did someone actually tune the bike on the dyno? if so, did they do ANYTHING ith the ignition timing???? i also would think that your numbers should show better..
m
Overall it does look low, but could be how it's graphed. Torque and HP should cross at 5250. Instead they appear to cross at 4750. Otherwise the AF looks great.
For reference, my 2011 103 with stock injectors, stock heads, .030 gasket and Andrews 54h cam was around 98hp and 109 torque.
how many disks are in your supertrapp exhaust? What intake?
And like somebody else mentioned whats the timing?
definitely should be seeing some higher numbers given the head work and compression bump... with good intake and exhaust. Id expect 100-105hp/~115tq. But then again, whats your altitude and weather on day of testing?
My bone stock 103 with nothing but Fueling 543 cams, S&S lifters, bassani road rage pipe, DK custom 636v intake, and tuned with a power vision made 91hp/107tq. And my tuner noted that the Hp seemed a number or two low... but that the dyno he had my bike on is always a few numbers low than others hes been on and had the same bikes on it and other dynos.
Last edited by 2500hdon37s; May 31, 2022 at 01:44 PM.
i''m kinda curious on this myself,,,,,A as mentioned the scaling is off....B there is only 1 AFR trace,,,,,,Did someone actually tune the bike on the dyno? if so, did they do ANYTHING ith the ignition timing???? i also would think that your numbers should show better..
m
What bothers me is that 6th gear fell off quicker nut started off better than 5th. It kinda tells me that the upper RPM timing is too advanced.. The sure clue would be to do another pull at the time.
i''m kinda curious on this myself,,,,,A as mentioned the scaling is off....B there is only 1 AFR trace,,,,,,Did someone actually tune the bike on the dyno? if so, did they do ANYTHING ith the ignition timing???? i also would think that your numbers should show better..
m
They definitely did do so me tuning, My high heat problems were corrected but the bike just seemed sluggish. and after looking at the timing tables for a WOT run, the timing was definitely low.. At least I thought it was.. I'll try to post up the timing charts..
Originally Posted by MTBIG G
Overall it does look low, but could be how it's graphed. Torque and HP should cross at 5250. Instead they appear to cross at 4750. Otherwise the AF looks great.
For reference, my 2011 103 with stock injectors, stock heads, .030 gasket and Andrews 54h cam was around 98hp and 109 torque.
I can't believe I missed that.. I took for granted that it was a 5250.. I myself never seen that.. Personally I like the AFR's a little higher.. Not seriously concerned about heat as long as it stays below 270 cruising.. In my book which is a short story, Lean is mean without creating hi heat situations.. Just so you know my current cruising temps are now in the high 250's..
Originally Posted by Max Headflow
What bothers me is that 6th gear fell off quicker nut started off better than 5th. It kinda tells me that the upper RPM timing is too advanced.. The sure clue would be to do another pull at the time.
I would like to do that but I've been out of work for 7 months now.. And as I stated in marcodarqs post I was a bit surprised as how low the timing was for a wide open throttle run.. Well at least to me it was low, coming from the Evo world.. People tell me that the TC's don't require as much timing but I'm not too sure about that.. Look at it this way, too low of timing creates more heat build up in the motor so why would it be set lower than an Evo..
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103" thought it would be more..
