XX4me Posted May 16, 2004 Share Posted May 16, 2004 Has anyone dyno'd their stock XX on an air fuel monitoring dyno. If so can you post it or email the sheet to me and I'll post it. I'm looking for the stock air fuel ratio numbers for the different RPMs. Quote Link to comment Share on other sites More sharing options...
MiDNiTXX Posted May 17, 2004 Share Posted May 17, 2004 I have been very curious about this myself, unfortunately the dyno I had previous did not include A/F Quote Link to comment Share on other sites More sharing options...
KCBIRD Posted May 18, 2004 Share Posted May 18, 2004 I've got a dyno run for mine when it was stock, except for a K&N air filter. but I only have a printed copy. If you have a fax# I can send you a copy. If it'll work that way for you, pm me. Quote Link to comment Share on other sites More sharing options...
Red J Posted May 18, 2004 Share Posted May 18, 2004 Or mail a copy to me (i'll have it the next day) and I'll scan and post it. J. Quote Link to comment Share on other sites More sharing options...
AlphaBird Posted May 18, 2004 Share Posted May 18, 2004 Or mail a copy to me (i'll have it the next day) and I'll scan and post it.J. I posted one a while ago---for an '02 140HP 80ft-lbs--Ill try to find it ooops no a/f on it Quote Link to comment Share on other sites More sharing options...
MiDNiTXX Posted May 20, 2004 Share Posted May 20, 2004 I've got a dyno run for mine when it was stock, except for a K&N air filter. but I only have a printed copy. If you have a fax# I can send you a copy. If it'll work that way for you, pm me. Does it have A/F ratio on it? If so I have a fax number Quote Link to comment Share on other sites More sharing options...
XX4me Posted May 25, 2004 Author Share Posted May 25, 2004 UP SIMBA! Quote Link to comment Share on other sites More sharing options...
XX4me Posted May 26, 2004 Author Share Posted May 26, 2004 Here are the two I've recieved so far. Thanks KCbird and daveszx302 As you can see there is some discrepency in the air fuel ratio between the two. Neat how the HP and torque curves are so similar though. Quote Link to comment Share on other sites More sharing options...
daveszx302 Posted May 26, 2004 Share Posted May 26, 2004 Wow, that air/fuel is a lot leaner on his, different year or mods? Mine was tested bone stock, '01, at 4000 ft elevation. My sheet is the bottom one for your info. The folks who tested it told me that it would post higher hp & torque if tested at lower altitude but with talking to you I wonder about that? Bike was tested in Sturgis, S.D.,,,not West Bend, WI. Anyway, good luck with your tuning and keep us posted! Dave Quote Link to comment Share on other sites More sharing options...
XX4me Posted May 26, 2004 Author Share Posted May 26, 2004 He said his was stock other than a K&N filter. Quote Link to comment Share on other sites More sharing options...
daveszx302 Posted May 27, 2004 Share Posted May 27, 2004 So aK&N filetr is worth 3 hp & 2 ft/lb? What year is his? I didn't buy one cause everyone said it wasnt worth anything, guess I will go order one now. :sad: Plus it looks like it leans it out a lot better for performance. -Dave Quote Link to comment Share on other sites More sharing options...
Redbird Posted May 28, 2004 Share Posted May 28, 2004 My '01 pulled 138.8hp -bone stock, including air filter. Different day, different dyno, comparisons of peak numbers are meaningless here. Quote Link to comment Share on other sites More sharing options...
EVLXX Posted May 28, 2004 Share Posted May 28, 2004 Here..... let me throw a monkey in here. Has you ever seen this equation? HorsePower = Torque X RPM / 5252 Now go back to those spead sheets and tell me what you see, and then tell me why. Now do you see the problem? WTF? Quote Link to comment Share on other sites More sharing options...
daveszx302 Posted May 28, 2004 Share Posted May 28, 2004 Yes, I've seen that equation many times, it's true for eveyr dyno ive had for my car, as typical car dyno graphs cross over at 5250 rpm (hp & tq) unless they are v-tec or exotic intakes. I think it has something to do with intake runner length vs cam timing. Typical car has intake runner length of 10+ inches vs typical bike has 2-4 inches which boosts top end hp vs bottom end torque. Mabye someone else can better explain. -Dave Quote Link to comment Share on other sites More sharing options...
demon Posted May 28, 2004 Share Posted May 28, 2004 On most dyno sheets, you have a different scale for torque and horsepower. HP on the left, TQ on the right. There's nothing wrong with the dyno charts listed above. Quote Link to comment Share on other sites More sharing options...
EVLXX Posted May 29, 2004 Share Posted May 29, 2004 Torque is a measurement of force. Horse Power is a measurement of force ( or torque) over time (RPM). So... none of the above charts are correct... ...where did I see the one that crosses at 5252 ???? Anyway, HP and Torque are always the same at 5252, and there-for there paths always cross at that point. If they don't... something is very wrong. As someone already pointed out.... it's a mathmatical equation.... intake runner lengths don't change it, but a faulty set up Dyno does. So the next time you get a Dyno sheet that doesn't cross at 5252, Tell the guy you want your money back. :wink: Quote Link to comment Share on other sites More sharing options...
EVLXX Posted May 29, 2004 Share Posted May 29, 2004 On most dyno sheets, you have a different scale for torque and horsepower. HP on the left, TQ on the right. There's nothing wrong with the dyno charts listed above. Hmmmm... OK, so what you are saying is that all of those sheets are just showing a set of different HP graphs... Still fucked up if you ask me.... where is the torque graph then? Quote Link to comment Share on other sites More sharing options...
Redbird Posted May 29, 2004 Share Posted May 29, 2004 The numbers on the left side are HP, the numbers on the right are torque. Draw a vertical line at 5252, and look where it'd hit each the HP and torque lines on the graph- the go to the left for HP, right for torque. Both sheets have the bikes putting out something in the mid-sixties (torque and HP) at 5252. Quote Link to comment Share on other sites More sharing options...
daveszx302 Posted May 29, 2004 Share Posted May 29, 2004 Thanks for the much better explaination guys :grin: -Dave Quote Link to comment Share on other sites More sharing options...
EVLXX Posted May 30, 2004 Share Posted May 30, 2004 Now I see which numbers you are talking about.... :banghead: That's about the stupidest thing I've seen in awhile.... 2 different values on the same graph. Wouldn't want to use the numbers on the left.... that might confuse someone. :roll: OH Well..... maybe next time I'll catch the bus. Quote Link to comment Share on other sites More sharing options...
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