Hi David,
My current setup is a Varisafe that has the 0-5V output programmed with a RPM/MAP 8x8 grid. The output is clamped to 0 when the TPS is lower than 2.8V. The output is wired to a Varicool that injects only based on the 5V output. I got 2 nozzles: a M5 and a M3 (M3 is going to be replaced by a M5 soon).
I included the image below to show the injection curves I'm currently using.
I would first like to know how the "Tune" button on the VariCool will affect the injection curves if I set it lower than 10. Is it going to reduce the whole curves by a percentage? If this is not the case, is there a way to reprogram it to do this? I'm a programmer myself and wouldn't fear to play with the VS firmware if I had access to it.
Do you have access to the 150 psi pump specification regarding pressure versus dutycycle? Am I right to think that if the pump runs at 50%, it will deliver approx. 75 psi? I have calculated my chart's injection start points based on that assumption and I would like to know if I'm right.
Here's the formula I came with to calculate minimum required dutycycle:
((CURRENT_MAP + CHECKVALVE_CRACKING_PRESS) / PUMP_PRESS) * 100) = minimum dutycycle for boost
For example, if the MAP is 22psi, the checkvalve has a 22psi cracking pressure and the pump has a maximum pressure of 150 psi, I would need 29.33% dutycycle for the fluid to be able going through the line. What I'm missing now is the minimum pressure for good atomization. Having this, I could have a good injection start point. What is the minimum pressure I need to run with a dual-nozzle setup to obtain good atomization with the CoolingMist checkvalve and the 150 psi pump?
Thanks!
Drachonyx
p.s. : Would it be possible to hook the Varisafe to one of the injector ground and program it to inject based on injector dutycycle? Would it need any special hardware or one of the counter input would do?
p.s. 2: Are there any chances that the Varicool and the Varisafe are going to be included on the same board in a near future? IMO, that would be great to have a single injection control module without needing to hookup two devices together. Plus, it would be probably cheaper.
