[wrxeatr]

I did a boost leak test the other day just to see at what psi my methanol was injecting. The on is set at 7 and the full is set at 20. According to my boost gauge the meth doesn't inject until 12psi and cuts off at 9. I disconnected both the power wires to the pump when I was doing some headwork. Is there anyway to reset the system or controller?

[dvldoc]

Originally Posted by wrxeatr

I did a boost leak test the other day just to see at what psi my methanol was injecting. The on is set at 7 and the full is set at 20. According to my boost gauge the meth doesn't inject until 12psi and cuts off at 9. I disconnected both the power wires to the pump when I was doing some headwork. Is there anyway to reset the system or controller?

The controller only knows voltage so thats what it works with, Are you sure your map sensor is not actually a 2.5bar vs a 3 bar, This could account for the difference in the scale, If this is the case you would have to just lower the start point to match up and raise the full point. Also your scale could be different. Our controller is based on the MAP voltage scale of GM map sensors, other makes and models can have a different voltage scale.

Also are you 100% sure your boost gauge is acurrate? I think you ment the full was at 19psi right because it can not be 9psi or it would be activate at full 2psi higher than the start point.

The thing to check is the output voltage at those psi settings with a multimeter

[wrxeatr]

No what I meant was that the meth started injecting at 12psi and stopped injecting at 9psi (after I removed the compressed air). Also, I'm running a GM 3.3 bar map sensor GM Parts Direct: Your direct source for Genuine GM Parts part 9373269. Should I switch to a 2.5 or a 3?

[dvldoc]

using a air compressor on those sensors is a terrible way to test them, and can give you wrong results. The pressure at the gauge is not always the pressure at the end with those. I thought you had it on the vehicle. The scale will still be off with the 3.3bar but should not by that much.

You should be using one of these for testing a map sensor, Air compressors can also damage the diaphram on Map sensors with pressure spikes depending on the quality of the compressor and the pressure valve.

[wrxeatr]

It's a small air compressor. Only 5gal. It doesn't build pressure quick at all. I've got an adapter hooked up to the turbo inlet with a valve stem attachment. I don't hook it directly to the map sensor.