167.9 on one dyno152.9 on another..pissed - Kawasaki ZX-10R.net
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post #1 of 15 Old 07-27-2005, 09:05 PM Thread Starter
 
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Angry 167.9 on one dyno152.9 on another..pissed

had bike dynoed at 167.9 on dyno at local harley full akro evo 2 pc -1 in the front took bike to ron ayers 2 weeks later 520 conv +2 in the rear... horse power was 152.9..... with custom map 157.9... 77.9 ft pounds of torque...what the hell happened... torque was 72 got +5 on hp and torque...what happened... i know that its been hot but thats a big h.p. loss somebody please tell me what goin on... is something wrong with the bike..or did i get a lemon... i love my bike but this makes no sense
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post #2 of 15 Old 07-27-2005, 09:08 PM
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Can't compare two different dynos. Can't even compare the same dyno unless the runs are within an hour or so. The amount of hp the dyno shows isn't important. What is important is that you gained 5 hp and lb-ft with the new map.
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post #3 of 15 Old 07-27-2005, 09:23 PM
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Yep, can't go by many dyno machines, but just the same one with changes to the bike at almost the same time same conditions to get real results. I had a guy that said the dealer dyno gave him 140hp on his zx9 and mine only did 131 on the same dyno, but have vids showing me pull easy and passing against him when we did roll-ons or raced. Don't trust dyno's and #s just changes on the same one from mod to mod with the same conditions.
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post #4 of 15 Old 07-27-2005, 10:00 PM
 
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never have two dynos with exactly the same numbers it'll never happen.
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post #5 of 15 Old 07-27-2005, 10:47 PM Thread Starter
 
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ok... so are dynos really off that much... possibly it was because it was first done at the harley shop??
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post #6 of 15 Old 07-27-2005, 10:51 PM
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Quote:
Originally Posted by black10r_n_nc
ok... so are dynos really off that much... possibly it was because it was first done at the harley shop??

no...but you could of been spinning the tire on the other dyno
Do you have a chart to post of that pull? the low one?

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"when ya lose site of why ya ride then you've lost what really matters"---THE MOTORHEAD
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post #7 of 15 Old 07-27-2005, 10:54 PM Thread Starter
 
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not yet .. going to post it as soon as i pick up the bike from ron ayers
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post #8 of 15 Old 07-27-2005, 11:04 PM
 
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Yes they can be that different. Had a guy call me after I dyno'd his ZX12 asking what I had done to it ( we just did a power run) coz he just went down to another shop after leaving mine and got 11 more h.p. Were they both dynojet 250 model dyno's? Or was one a Dynojet and the other a different brand? That's where you'll see the biggest differences. But like was said, the "numbers" mean Jack.........It's the gains on the same dyno for the mod you've done is what is important.
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post #9 of 15 Old 07-27-2005, 11:14 PM Thread Starter
 
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so basicially i should be happy that i got the +5 h.p. and torque.....
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post #10 of 15 Old 07-27-2005, 11:15 PM
 
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Harley dealer dynos run artificially high so all the Billy Badasses don't feel like they bought slow, weak, ugly bikes. Well, dyno's don't help w/ ugly.
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