Stock IS-F Dyno
#1
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Stock IS-F Dyno
- GCC Spec IS-F - 417 HP
- Fuel Used - 95 RON
- Three Runs, with aprox. 10 min cool-down between runs.
- All runs in 6th Gear
-Run 1: 349HP - Run 2: 358HP - Run 3: 367HP
- Best run:
X-axis in Speed km/hr
X-axis in RPM x 1000
- Fuel Used - 95 RON
- Three Runs, with aprox. 10 min cool-down between runs.
- All runs in 6th Gear
-Run 1: 349HP - Run 2: 358HP - Run 3: 367HP
- Best run:
X-axis in Speed km/hr
X-axis in RPM x 1000
#4
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Nice runs...
But also know that cool down runs normally attribute to a much higher Rwhp than actual..
Reason being is the engine is not running at normal operating temps, if you keep cooling down the car.
Also, if your Dyno shop has the data saved, have them re-graph your last run 3
You will want to have the data graphed SAE Corrected & Smoothing set to 5
Correction Factor STD numbers with smoothing Set to 0, will also always show much higher numbers as well.
Best Regards,
Joe Z
But also know that cool down runs normally attribute to a much higher Rwhp than actual..
Reason being is the engine is not running at normal operating temps, if you keep cooling down the car.
Also, if your Dyno shop has the data saved, have them re-graph your last run 3
You will want to have the data graphed SAE Corrected & Smoothing set to 5
Correction Factor STD numbers with smoothing Set to 0, will also always show much higher numbers as well.
Best Regards,
Joe Z
Last edited by Joe Z; 11-13-10 at 05:20 PM.
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#9
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Once you factor in the 16-20% drive train loss, you will get the number of Rwhp..
Which is the power being put down at the Rear Wheels.
Typical stock IS-F's put down approx 330 to 350 Rwhp SAE Corrected on a Dynojet
The OP's dyno graph showing the "367 Rwhp" number - with a Standard correction factor, is very Generous for stock numbers.
Joe Z
#12
Don't forget that different engine layouts have different drivetrain loss, and sames cars with different transmissions (automatic vs manual, etc...) will have different drivetrain losses.
#13
Tech Info Resource
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All possibly true, but not the case with the IS F. One engine, one gearbox, one layout - they're all the same.
#15
If you're interested here is a very good article about drivetrain loss:
http://www.modified.com/tech/modp-10...oss/index.html
Last edited by infinus; 11-23-10 at 03:04 PM.