before and after dyno
01-08-2003, 05:40 AM
#21
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Originally posted by xXx
Hmmm I need to find my dyno sheet. Either the shop you're going to is not that good (equipment, tuning, etc.) or you're not using high enough octane. A GOOD, CLEAN run on a dyno should have a smooth line all the way through. Maybe a blip here and there but that's all. His sheet looks like an earthquake hit while it was on the rollers. It definitely shouldn't have spikes up and down the whole way through. Spikes are there to indicate detonation, misfiring, timing retard, etc. You will get some spikes but usually only 2 or 3 if it's running right.
Hmmm I need to find my dyno sheet. Either the shop you're going to is not that good (equipment, tuning, etc.) or you're not using high enough octane. A GOOD, CLEAN run on a dyno should have a smooth line all the way through. Maybe a blip here and there but that's all. His sheet looks like an earthquake hit while it was on the rollers. It definitely shouldn't have spikes up and down the whole way through. Spikes are there to indicate detonation, misfiring, timing retard, etc. You will get some spikes but usually only 2 or 3 if it's running right.
01-08-2003, 05:53 AM
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Originally posted by xXx
Hmmm I need to find my dyno sheet. Either the shop you're going to is not that good (equipment, tuning, etc.) or you're not using high enough octane. A GOOD, CLEAN run on a dyno should have a smooth line all the way through. Maybe a blip here and there but that's all. His sheet looks like an earthquake hit while it was on the rollers. It definitely shouldn't have spikes up and down the whole way through. Spikes are there to indicate detonation, misfiring, timing retard, etc. You will get some spikes but usually only 2 or 3 if it's running right.
Hmmm I need to find my dyno sheet. Either the shop you're going to is not that good (equipment, tuning, etc.) or you're not using high enough octane. A GOOD, CLEAN run on a dyno should have a smooth line all the way through. Maybe a blip here and there but that's all. His sheet looks like an earthquake hit while it was on the rollers. It definitely shouldn't have spikes up and down the whole way through. Spikes are there to indicate detonation, misfiring, timing retard, etc. You will get some spikes but usually only 2 or 3 if it's running right.
01-08-2003, 09:42 AM
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It's a brand new car with small mods. A dyno bar is NOT supposed to be choppy. Simple fact. Don't get bitter because you know nothing about cars McDan. And like I said it could be the dyno shop's computer software isn't the best around giving that graph but it's not supposed to look like that. Proof is in the pudding his #'s weren't good. Obviously somethings wrong genious.
Oh and BTW, each dash on the side indicating #'s is equivalent to 5hp. That's to the wheels! The largest spike on that graph is a drop of 20 RWHP! I don't know about you but that's friggin huge. The others are around 3-8 rwhp spikes. And 2003Z already stated that the tech at the dyno made similar reference.
Oh and BTW, each dash on the side indicating #'s is equivalent to 5hp. That's to the wheels! The largest spike on that graph is a drop of 20 RWHP! I don't know about you but that's friggin huge. The others are around 3-8 rwhp spikes. And 2003Z already stated that the tech at the dyno made similar reference.
Last edited by xXx; 01-08-2003 at 10:21 AM.
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