AnnDee4444
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- #1
I've was wondering how all the aftermarket baseline dyno curves compare to each other, and found a neat website that lets you convert images into CSV data www.graphreader.com. So with some work, I've collected some baseline 2.0 dyno charts and plotted them out together.
Some observations:
Sources:
Update: I've put together what I think is a good average of all these dynos. Looks like peak torque is around 275 lb-ft from 2750-4100. If this is true, it means that there is either 9% drivetrain loss (which I highly doubt), or the 2.0 actually makes more than the official 295 lb-ft at the crank. Even the lowest peak number (Mishimoto @ 265 lb-ft) is only around 10% less than the official published torque number.
Here's what I did to get this average:
Some observations:
- automobile-catalog.com provides engine torque that has been estimated by a computer. I'm not sure how they do this, but I found that factoring 85% for drivetrain losses puts it pretty close when ignoring below 2500 RPM.
- Some plots don't look accurate below certain RPMs, and should probably be ignored (ExtremeTerrain.com's 3000 RPM, Superchips below 2200 RPM)
- Vaitrix & Eurocompulsion are sharing data
- not all dynos measure power equally
Sources:
- automobile-catalog.com (Calculated)
- ExtremeTerrain.com
- Vaitrix & Eurocompulsion
- JB4 (Dynojet)
- Mishimoto (Dynojet)
- Superchips (SuperFlow)
Update: I've put together what I think is a good average of all these dynos. Looks like peak torque is around 275 lb-ft from 2750-4100. If this is true, it means that there is either 9% drivetrain loss (which I highly doubt), or the 2.0 actually makes more than the official 295 lb-ft at the crank. Even the lowest peak number (Mishimoto @ 265 lb-ft) is only around 10% less than the official published torque number.
Here's what I did to get this average:
- Ignored the computer generated data from automobile-catalog.com
- Ignored the unrealistically steep sections at the beginning & ends of some of the pulls (ExtremeTerrain.com's & Superchips)
- Smoothed out minor bumps & dips from where certain data starts & stops
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