Nic55
Active Member
Hey guys, not the best in reading and understanding graphs. This is the dyno Graph of a w204 C63 with a secondary cat delete only. Is the torque low or is that wheel power torque figures?
W204 C63 AMG Dyno Graph
- Thread starter Nic55
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- leicestershire
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- R230 SL500 in teal blue, R231 SL500 in black. Vauxhall insignia diesel
Torque and power lines should cross at around 5250rpm, the fact this looks like it doesn't makes me think the torque curve is missing the correct scale.
Teego
MB Enthusiast
The lines cross OK but there should be a scale for torque down the right side. Also no scale for rpm. Doesn't say whether RWBHP or corrected for crank BHP.
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Nic55
Active Member
Can that be whp for torque
Teego
MB Enthusiast
Nope. The dotted line is torque.
With just a secondary cat removal and no known remap, 521bhp has to be the corrected crank figure.
It's a strong figure for no remap, which would make me suspect the car has already been remapped.
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Nic55
Active Member
What Is the torque figure on the car? Is it approx 388ft/lt or am I reading the graph wrong? First remap on the car no previous tunes. If that is the torque figure that lower than a standard car
It's the horizontal graph (so ~388 lb/ft). Assuming for argument's sake the graph is at the wheels and using a (very) rough multiplication of 1.18 gives 457 lb/ft which is almost spot on for a W204 C63 (443 lb/ft), however, assuming the graph bhp figure is also at the wheels would give 614 which isn't possible without a s/c or similar.
Whichever way you look at it (@Wheels or @flywheel) the figures don't add up. Considering the book states 450hp, a 70 hp increase with just a secondary cat delete and remap is unrealistic. Unless perhaps it's the (480hp) PPP variant?
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Nic55
Active Member
HP figure seems right as these get to 510-520 with a tune and secondary decat. What seems super low is the torque. torque figures should be around 470-475ft.lb. Correct me if I'm wrong
My understanding is that 510 PS is realistic for the regular W204 C63, bringing the power output m in line with the other models with the M156 engine.
Teego
MB Enthusiast
You can't tell what the torque is because there is no ft/lb scale on the right of the chart. The numbers on the right are the same as the BHP figures on the left. If you really want to know all your numbers you need to to get it on a decent dyno. But dynos give different numbers depending on many factors.
