Interesting Dyno Results

[GT_Roadcourse_Newb]

As mentioned, that little blip at the end is not normal (unless you hit it with a small shot of nitrous lol) and has increased the numbers by idk 20-30hp. The curve should be smooth just like the rest of it below that.

This happens in big stalled automatics where at the beginning of the run the converter flashes and the dyno reads a very high torque number which then immediately starts dropping and acting like a normal curve.

Its a manual tranny- wonder why it happened - twice!

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[jbailer]

Not sure why but definitely not correct with torque going up at the end like that.

 

[EFI]

Its a manual tranny- wonder why it happened - twice!

Actually now that I think about it, the dyno operator that was driving my car while I was self tuning it a few weeks ago mentioned something around this. He asked me to tell him specifically where the rev limiter/cutoff is because he wanted to stay clear of it. He said that when that happens and you hit the limiter on the dyno, it gives an inflated number for some reason, similar to how your spikes up right at the end. He said there was one dyno day for some rice club that had a bunch of people go around bragging about how much power their car made even though this *mistake* happened and the number was not correct.

Being right at the end of the run, I bet that's what happened and why right after that the power literally falls off the charts.

 

[Crim]

I'm betting you won't see that bump on a different dyno.
Might be worth giving it a try when you get the opportunity.

 

[GT_Roadcourse_Newb]

Actually now that I think about it, the dyno operator that was driving my car while I was self tuning it a few weeks ago mentioned something around this. He asked me to tell him specifically where the rev limiter/cutoff is because he wanted to stay clear of it. He said that when that happens and you hit the limiter on the dyno, it gives an inflated number for some reason, similar to how your spikes up right at the end. He said there was one dyno day for some rice club that had a bunch of people go around bragging about how much power their car made even though this *mistake* happened and the number was not correct.

Being right at the end of the run, I bet that's what happened and why right after that the power literally falls off the charts.

That sounds like what might be going on.. Guess I need to stick with the dynojet numbers or the smooth number

 

[LETHAL]

10-12% loss is average for these cars.

 

[import111]

Did you dis-able traction control? That bump at the end could have been TC kicking in.

 

[GT_Roadcourse_Newb]

Did you dis-able traction control? That bump at the end could have been TC kicking in.

You sir, I believe, have nailed it. Forgot TC.

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