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Doing some tests on how AFR affects power... How accurate is the dynamometer?
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I was doing some tests on how AFR affects HP, but my results seem to be nonsensical:

AFR on gauge HP Torque
9.9 (choke pulled) 85@8000 59@4500
13.1 78@6500 73@4000
14.3 75@7000 63@4500
14.9 75@7000 63@4500
15.2 85@8000 55@7000
16.3 113@8500 (I accidentally closed the game before recording this number, sorry, but I know it was @ 8500)
As high as it will go without stalling (>18) 112@8000 73@8000

The 16.3 and >18 numbers seem to have very low power and torque up until around 7000rpm then it skyrockets. As per my understanding, leaner should result in less power and low-end torque, richer should result in the opposite (up until a point).

Is the dynamometer accurate or is the game buggy, or am I doing something wrong? Because if these numbers are accurate, why is 14.1 said to be the "best balance between economy and performance"?

This is with a freshly mostly rebuilt engine with twin carbs, a fresh-ish oil change, and the turbo badge on the boot. All numbers were taken with the engine up to temperature, varying around ±5° on the thermometer gauge. No mods to my knowledge that should affect performance or the dynamometer, though I do have many mods.

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1 year ago