Rider99XX Posted May 20, 2007 Share Posted May 20, 2007 Last year I dynoed my XX and got 129. something. It was stock except for a K&N and a PCII. I swapped out the stock exhaust with a full Akropovic system and remapped the PCII. I just dynoed it and it turned 142.something, I don't have the sheet in front of me. Nice gain I think. Quote Link to comment Share on other sites More sharing options...
XXTi Posted May 20, 2007 Share Posted May 20, 2007 Congrats. Very nice results. Quote Link to comment Share on other sites More sharing options...
Skull Posted May 20, 2007 Share Posted May 20, 2007 Nice gain I think. Yep. Almost completely meaningless, though. Quote Link to comment Share on other sites More sharing options...
BackStreet Posted May 20, 2007 Share Posted May 20, 2007 That sound about right. How does it ride? Is the power smooth? Quote Link to comment Share on other sites More sharing options...
beondwacko Posted May 20, 2007 Share Posted May 20, 2007 Some 1/4 times would be bennificial as well. Especially the MPH at the far end. THat'll show HP gains for sure. That is of course if you have some. Quote Link to comment Share on other sites More sharing options...
Rider99XX Posted May 20, 2007 Author Share Posted May 20, 2007 That sound about right. How does it ride? Is the power smooth? Power is smooth but there is a slight flat spot. It occures at the exact same place it did with the stock exhaust. Just past the flat spot there is a nice hit that lasts through the rev limiter. Sorry, no 1/4 mile times. There is no 1/4 mile strip around here. But I do have timing slips from a few years ago when it ran 10.29 @ 138mph. I'm doing track days with it now. That is a BLAST!!! I just need some suspention upgrades now. Any suggestions???? Quote Link to comment Share on other sites More sharing options...
beondwacko Posted May 20, 2007 Share Posted May 20, 2007 That sound about right. How does it ride? Is the power smooth? Power is smooth but there is a slight flat spot. It occures at the exact same place it did with the stock exhaust. Just past the flat spot there is a nice hit that lasts through the rev limiter. Sorry, no 1/4 mile times. There is no 1/4 mile strip around here. But I do have timing slips from a few years ago when it ran 10.29 @ 138mph. I'm doing track days with it now. That is a BLAST!!! I just need some suspention upgrades now. Any suggestions???? 10.29@138 = Envy from me. Quote Link to comment Share on other sites More sharing options...
Rider99XX Posted May 21, 2007 Author Share Posted May 21, 2007 Nice gain I think. Yep. Almost completely meaningless, though. Why is it meaningless? Quote Link to comment Share on other sites More sharing options...
Skull Posted May 22, 2007 Share Posted May 22, 2007 Nice gain I think. Yep. Almost completely meaningless, though. Why is it meaningless? Because unless the dyno runs were done on the same day by the same guy under the same weather conditions, the margin of error on the measurements is large enough that you don't really know how much it increased or didn't. Quote Link to comment Share on other sites More sharing options...
Rider99XX Posted May 22, 2007 Author Share Posted May 22, 2007 Nice gain I think. Yep. Almost completely meaningless, though. Why is it meaningless? Because unless the dyno runs were done on the same day by the same guy under the same weather conditions, the margin of error on the measurements is large enough that you don't really know how much it increased or didn't. True. But the runs WERE by the same guy on the same dyno under almost the exact same atmosphieric conditions. The only difference was the ambiant tempretures were one degree different. That may make a SLIGHT difference. Even the barometric readings were within .25 of an inch of each other. One degree difference in tempretures and .25 inch in baro pressure will make a ever so slight difference thats a given. But it's close enough for me. Besides, it was just a fun run, NOT a full blown tuning session trying to eek out every last .01 HP. And it only cost $20.00 so what the heck. Things like tire profiles and how worn the tires are, how well the chain is lubed and a whole host of other things effect dyno readings. Even repeated runs on the same day can and usually are different. Too many variables. Quote Link to comment Share on other sites More sharing options...
Skull Posted May 23, 2007 Share Posted May 23, 2007 Even repeated runs on the same day can and usually are different. Too many variables. Which is why I said that, almost a year apart, = almost completely meaningless. Still, it's a good number. Good enough for bragging rights, anyway. Quote Link to comment Share on other sites More sharing options...
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