Which one are you perfer??
what are we looking at? 143kw = 192bhp. 115kw = 154bhp...thats a huge difference in anyones book. Are they both of the same car with different exhausts/manifolds or what??????
There are different dyno and same car.
They had different cam gear setting. Don't concentrate on the kw. Different dyno got different number. Who care?
Just compare the torque, i think the below one is better.
They had different cam gear setting. Don't concentrate on the kw. Different dyno got different number. Who care?
Just compare the torque, i think the below one is better.
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So what are you saying? That they shouldn't be compared, yet the second graph is the better of the two? From what can be seen, the first graph is done in fourth and the second in third gear, on a different dyno and presumably on "5th Jan 1999". Further, you have already made up your mind regarding this issue as well; your preference for the second. I guess the question I'm asking is whether or not I'm missing something?
I believe he is saying to not compare the #'s (because you can't with different dynos), but to look at the shape of the torque curve. You can see the top one is flatter, while the one on the bottom seems to rise before it drops off at the end.
Only way to tell for sure is to do a base line run, then make whatever changes you want and run it again immediatly. Comparing runs that are made on different dynos is difficult. One could argue that maybe the peak tq of the bottom graph is the same as the top one, therefore the bottom graph is a weaker run.
Only way to tell for sure is to do a base line run, then make whatever changes you want and run it again immediatly. Comparing runs that are made on different dynos is difficult. One could argue that maybe the peak tq of the bottom graph is the same as the top one, therefore the bottom graph is a weaker run.
If you guys look at the scale, the bottom one has more torque. ~3200 newton-meters (I figure) versus 3800 N-M
You can make up for torque with gearing, however you can't make up horsepower.
ITR wins! If I had to guess, are we looking at an ITR versus a tuned LS motor?
You can make up for torque with gearing, however you can't make up horsepower.
ITR wins! If I had to guess, are we looking at an ITR versus a tuned LS motor?
I thought dyno plots usually use RPM as the X axis, not road speed.
The first plot says it was done in fourth gear. The second plot doesn't say, but given that it only goes up to 79 miles per hour, I'm guessing that it's in third gear and has shorter gearing than the stock USM gearing, which goes up to 89 mph in third.
Very confusing...
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nsxtasy »</TD></TR><TR><TD CLASS="quote">
I thought dyno plots usually use RPM as the X axis, not road speed.
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Whoops. Yeah Ken, they use RPM when there's a good RPM signal going to the dyno computer. If not, or they don't hook it up, then all you can graph is the speed of the dyno wheel.
Being unfamiliar with the units I just assumed "N" was "Nm", measured somewhere. Not the flywheel, if it doesn't have a RPM pickup.
I thought dyno plots usually use RPM as the X axis, not road speed.
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Whoops. Yeah Ken, they use RPM when there's a good RPM signal going to the dyno computer. If not, or they don't hook it up, then all you can graph is the speed of the dyno wheel.
Being unfamiliar with the units I just assumed "N" was "Nm", measured somewhere. Not the flywheel, if it doesn't have a RPM pickup.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by nsxtasy »</TD></TR><TR><TD CLASS="quote">I thought dyno plots usually use RPM as the X axis, not road speed.</TD></TR></TABLE>
I actually had to convince the owner of the last shop I worked at that rpm was better on the X axis than road speed. In fact Dynojets (I don't know about others) can't even measure torque without having the Engine Speed Sensor hooked up.
I actually had to convince the owner of the last shop I worked at that rpm was better on the X axis than road speed. In fact Dynojets (I don't know about others) can't even measure torque without having the Engine Speed Sensor hooked up.
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