Here's both dyno results. Identical modifications except the
supercharger and meth. Same dyno testing procedure on both cars. Looks
like they also did a heat soak test on the ESS car, but not the Active car.
The first one is the Active car. According to the notes, Active
dictated the dyno testing procedures and had their dealer present at the
dyno. There's also video to document the procedures. Pretty hard to
call BS on that.
Car and Modifications:- 2008 BMW M3
- Active Autowerke Stage-2 Supercharger
- +Methanol Injection
- 6MT
- Akrapovic Evolution Exhaust
- 91 Octane
Conditions:- Temparature:: 72.92 degrees F
- Atmospheric pressure: 30.09 inHg
- Humidity: 28%
- SAE Correction: 0.97
- STD Correction: 1.00
- Uncorrected: 1.00
Results:- SAE Corrected: 465whp @ 8000 RPM, 334wtq @ 6250 RPM. 7.80 PSI
- STD Corrected: 478whp, 343wtq
- Uncorrected: 479whp, 344wtq
Dyno Database:Dyno
Graphs:
Boost Log Analysis: 7.70 PSI Average, 9.43 PSI
Peak
Video
Dyno Testing Procedures:
These procedures were specified by Active Autowerke. Since we were on
91 octane, methanol injection must be used. We originally intended to
conduct tests with and without methanol injection, but were advised not
to do so without 93 octane gasoline. We were instructed to run the dyno
and let the car cool down one minute between runs. At the end of three
runs, we were instructed to turn off the motor, let the engine cool for
ten minutes, then repeat the same testing procedure for three more runs.
In addition to capturing horsepower, torque, and engine RPM, we
originally intended to collect spark advance, and knock sensor data from
the OBD port via the Bavarian Technic scan tool (with thanks to Bren @
Bren Tuning for providing the necessary configuration file). However,
once we hooked up the BT tool to the OBD port, we discovered we could
not read any data from the OBD port using the BT tool. We did not try
to diagnose the problem since we were "on the clock" at the dyno shop.
We later found out this was caused by the Akrapovic Delete-R installed
in the system. We were therefore unable to capture any spark or knock
sensor data. If time permits, we plan to return to the dyno with the
same configuration, remove the Delete-R and re-test.
All of the dyno runs are filmed in HiDef video to document
the authenticity and independence of the tests. A Kestral 4500 portable
weather station is brought to take independent weather measurements.
This provides a cross-check for the dyno weather station to ensure that
the dyno weather station is reading accurately and has not been tampered
or altered in any way.
-----
Here's the ESS car on the same dyno, 24-hours later.
Car and Modifications:- 2009 BMW M3
- ESS VT1-535 Supercharger
- 6MT
- Akrapovic Evolution Exhaust
- 91 Octane
Conditions:- Temparature:: 74.58 degrees F
- Atmospheric pressure: 30.20 inHg
- Humidity: 27%
- SAE Correction: 0.97
- STD Correction: 1.00
- Uncorrected: 1.00
Results:- SAE Corrected: 472whp @ 8325 RPM, 310wtq @ 7450 RPM. 5.80 PSI
- STD Corrected: 485whp, 319wtq
- Uncorrected: 487whp, 320wtq
Dyno Database:
All Dyno Runs -- SAE Corrected:
Boost Log Analysis -- 5.6 PSI Average, 6.14 PSI
Peak:
Dyno Testing Procedures:
After warming up the vehicle, we ran the dyno and let the car cool down
one minute between runs. At the end of three runs, we turned off the
motor, let the engine cool for ten minutes, then repeat the same testing
procedure for three more runs.
The next three runs were done
20 seconds apart. Therefore the last four runs were all done 20 seconds
apart, and constituted our "heat soak" test.
All of the dyno runs are filmed in HiDef video to document
the authenticity and independence of the tests. A Kestral 4500 portable
weather station is brought to take independent weather measurements.
This provides a cross-check for the dyno weather station to ensure that
the dyno weather station is reading accurately and has not been tampered
or altered in any way.