IS there anyone who tried to link water injection with TPS?

I have Aquamist HSF 6 using IDC to control injection. IDC and TPS are both 5 volt, so I thought why no try TPS.

 

IDC will be more directly related to airflow. Consider that full throttle TPS at low rpms will be associated with significantly different airflow than at high rpms. You could tune for it, but I think it would require more tweaking than following IDC.

 

Yeah, TPS probably wouldn't be the best way to go for an FI car.

 

I think I mentioned this on another board....


Anywho, going by TPS is a flawed strategy because it allows for full injection just off idle, regardless of the fact that you dont have enough airflow to utilize the water/methanol properly.

So you end up either going with a very small nozzle to avoid bogging, which means you dont get as much as you could use up top, or you do go with a proper nozzle, and get too much down low if you are not careful.