Richard, regarding the figures you posted earlier on, where they all measured using the optimum ignition timing for each one?

For example, when you got "race fuel + WAI....760bhp" the ignition curve was totally different to that of "Race fuel only" right?

Also did you have any AFR measurements as they appeared on the wideband?

Cheers,

John

I have managed to scan two race fuel plots but not doing a good job overlaying them - two gear box ratios, but the combined chart does show the effect of adding WIA injection onto race fual. You can see the afr measured on wide band. We would have gone a bit more leaner if we had time.

The timing was up by over 4 degrees and some areas area 6 degress. Not one hint of knock, I am sure we can move more but settled at 33 degrees at peak torque area - need to confirn wirth Gary.

Here is the plots on the night before the race. The bottom layer was plotted in April this year.

Water commenced at ~5400 RPM, boost was 0.2 bar higher at 1.9bar on the final run.

http://www.aquamist.co.uk/forum/gallery/gtart/layer.jpg

Nice work, some good reading there :D .

http://www.aquamist.co.uk/forum/twin-valve.jpg[/quote]

Hey Richard, how can I get a solenoid like one of these? I need a reliable solenoid that will withstand an approximate 130psi pressure difference. The only one I've found so far was from coolingmist.com.... but it failed and filled my motor with water as well as my crank case.... that was an $120 mistake...

The indicated valve can withstand a steady prssure of 120psi but only suitable for use with methanol or water. The failure of the coolmist valve may be due to pressure spike beyond 130psi. Check if you are feeding your pressurised water into the correct port - it might still be usable.

Richard

Richard, what is the purpose of these two HS valves? Since the HSV mounted by the pumps is controlling the flow, these seem redundant.

The two purple valves are not very high speed, takes 5-8ms to open. They are there to split the metered water from the HSV valve (installed in the trunk) into two separate locations.

The user can now select:

1) port only
2) pre-turbo
3) both

From a prior post, I see that the purple valves have been replaced with HSV's. I guess they are just being used as switches to direct where the water/meth flows to. Is this correct?

yes, you are 100% correct. The purple valves are not fast enough for PWM usage.