DYNO TEST: Water/Methanol Injection on M62-Supercharged K20A2
Finally got some time to myself today, and threw my personal car on the dyno for some tuning with the CoolingMist methanol kit I picked up a while ago.
As a control, I did a couple pulls with the methanol turned off, on the map that the car drove in on. Initial pull today was 295whp/203wtq with AFR's dipping down to 11.4-11.5:1 from about 5000 RPM to 8500 RPM.
After a bit of fuel was taken back out to get it where I wanted (11.8:1), here were the final methanol-off results for today.

Methanol OFF final numbers for today's testing: 300.8whp/207.7wtq
Then came the headaches.
When I wired the system up this past weekend, I did not tap into the ECU input/outputs, and just left the wiring alone until I was ready to perform this test.
So, I tapped my input, connected my output and did some pulls.
No luck.
Turns out, the EVAP VENT output was non-functional on my ECU. Regardless of settings, it would not function properly.
So, after half an hour or so of fiddling around and adding yet another pin to my "E" plug (swapped older Honda's don't have the full harness on that connector), I ended up with E20 as my output, and so began the methanol.
Simply spraying the methanol into the mixture richened it up to about 11.0-11.3:1 across the board, and the torque took a slight hit at no fuel removed and no ignition added.
Numbers from initial Meth-ON, no subtraction of fuel, and no addition of ignition netted me 289whp/199wtq.
As I kept pulling fuel to bring the AFR's up to (a still rather conservative 12.0-12.2:1), and adding ignition in 1-degree increments, it was noticed immediately that the methanol was doing something.
Finally, I tuned the AFR's to 12.2:1 or so, and ended up advancing ignition to 26 degrees throughout the high cam, and here is the final graph.

Methanol ON final numbers for today's testing: 316.4whp/213.8wtq
The run right before the final run netted a 320whp number, but I may attribute that to the loading of the dyno way up top.
Here is a comparison of the final meth OFF vs. meth ON graphs.

The setup consists of:
Stock-block K20A2
JRSC (EP3 manifold)
TDM Tri-Y header
3" Thermal exhaust
K-Tuned 3" cold air intake
RC 750cc injectors
K-Pro
CoolingMist methanol kit controlled through K-Pro (as well as fuel and ignition control for such)
I have a feeling a slightly leaner mixture would have netted a few extra gains, but by the time I got to where I did, I was beat from the work day, and didn't wish to keep making runs. It was time to close up and go home!
Thank you!
- Derek
As a control, I did a couple pulls with the methanol turned off, on the map that the car drove in on. Initial pull today was 295whp/203wtq with AFR's dipping down to 11.4-11.5:1 from about 5000 RPM to 8500 RPM.
After a bit of fuel was taken back out to get it where I wanted (11.8:1), here were the final methanol-off results for today.

Methanol OFF final numbers for today's testing: 300.8whp/207.7wtq
Then came the headaches.
When I wired the system up this past weekend, I did not tap into the ECU input/outputs, and just left the wiring alone until I was ready to perform this test.
So, I tapped my input, connected my output and did some pulls.
No luck.
Turns out, the EVAP VENT output was non-functional on my ECU. Regardless of settings, it would not function properly.
So, after half an hour or so of fiddling around and adding yet another pin to my "E" plug (swapped older Honda's don't have the full harness on that connector), I ended up with E20 as my output, and so began the methanol.
Simply spraying the methanol into the mixture richened it up to about 11.0-11.3:1 across the board, and the torque took a slight hit at no fuel removed and no ignition added.
Numbers from initial Meth-ON, no subtraction of fuel, and no addition of ignition netted me 289whp/199wtq.
As I kept pulling fuel to bring the AFR's up to (a still rather conservative 12.0-12.2:1), and adding ignition in 1-degree increments, it was noticed immediately that the methanol was doing something.
Finally, I tuned the AFR's to 12.2:1 or so, and ended up advancing ignition to 26 degrees throughout the high cam, and here is the final graph.

Methanol ON final numbers for today's testing: 316.4whp/213.8wtq
The run right before the final run netted a 320whp number, but I may attribute that to the loading of the dyno way up top.
Here is a comparison of the final meth OFF vs. meth ON graphs.

The setup consists of:
Stock-block K20A2
JRSC (EP3 manifold)
TDM Tri-Y header
3" Thermal exhaust
K-Tuned 3" cold air intake
RC 750cc injectors
K-Pro
CoolingMist methanol kit controlled through K-Pro (as well as fuel and ignition control for such)
I have a feeling a slightly leaner mixture would have netted a few extra gains, but by the time I got to where I did, I was beat from the work day, and didn't wish to keep making runs. It was time to close up and go home!

Thank you!
- Derek
Thanks for posting. I'm gonna try water/meth this summer. To bad you couldn't up the boost to take full advantage, but cool none the less.

- Derek
True. From the graph it looks like it would be a fun car to drive. Got to love the flat torque of a supercharger!
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turbob18a1
All Motor / Naturally Aspirated
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Aug 22, 2003 07:38 PM




