Oh what a nice RR graph!! This car must be nice to drive!!
23-09-2006, 12:29 AM
#3
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Rad,
You can tell how well a car is going to drive (to a certain degree) by the look of it's power delivery on the graph.
When you put your foot down, you like the power to come in strong and stay strong all the way up to the limiter don't you. Well if the graph has lots of peaks and dips this means the power is coming on and off and generally has an erratic power delivery.
Look at that huge dip. Imagine you're on full throttle with your engine at 2k rpm. You feel the turbo starting to build up pressure and the power is increasing. The turbo is fully spun up by 2700 rpm and the car starts to pull strong (ignoring the smaller peaks and dips) but it feels like the power is tailing off pretty quickly. Then all of a sudden at 5k rpm, the power drops from 213bhp down to 140bhp and then up to 205bhp by 5.5k rpm. Imagine how that feels on the road added to the fact that the power "curve" isn't a curve at all but looks more like a seizmic graph from the San Andreas Fault line whilst mid earth quake.
You can tell how well a car is going to drive (to a certain degree) by the look of it's power delivery on the graph.
When you put your foot down, you like the power to come in strong and stay strong all the way up to the limiter don't you. Well if the graph has lots of peaks and dips this means the power is coming on and off and generally has an erratic power delivery.
Look at that huge dip. Imagine you're on full throttle with your engine at 2k rpm. You feel the turbo starting to build up pressure and the power is increasing. The turbo is fully spun up by 2700 rpm and the car starts to pull strong (ignoring the smaller peaks and dips) but it feels like the power is tailing off pretty quickly. Then all of a sudden at 5k rpm, the power drops from 213bhp down to 140bhp and then up to 205bhp by 5.5k rpm. Imagine how that feels on the road added to the fact that the power "curve" isn't a curve at all but looks more like a seizmic graph from the San Andreas Fault line whilst mid earth quake.
23-09-2006, 06:59 AM
#5
Looks like it goes into sone kind of missfire. It goes as rich as anything (10:1 AFR) at the same point as the huge dip.
Why did the run continue? If the engine stopped producing power at 5k, or went into that bad a missfire, thats where the run should have ended IMO.
Why did the run continue? If the engine stopped producing power at 5k, or went into that bad a missfire, thats where the run should have ended IMO.
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