so reading on there site it does not say how much a turn does on the boost switch. Supposedly from cooling mist the pump is supposed to come on at 10psi. Yesterday i wired in a LED to show me when the pump turns on and i checked it. It is not coming on until around 14-15psi. Now is that because our gauges or in accurate or is it the boost switch. It did take a long time for my led to turn on in a 2nd gear pull from 40mph, probably came on at around 55ish mph at WOT

 

There is an adjustment that allows you to control when the pump will activate, per boost.

 

i know that, i am wondering though if it realy is 10psi and my guage is fualty. AND how much does it adjust with what amount of turning to the 5/64 screw (ex, 1 full turn = 1psi?)

 

No, very minute adjustments.

Although it may be different from other switches, so you should check the manual.

 

manual didnt say it, you can download the manual via coolingmist.com

 

Hmm.. weird...

 

yeah i have it and it doesnt take much adjustment to change it. i have it spray at 10lbs on the stock gauge and my interceptor says something like 6lbs

 

any idea why my LED doesnt turn on until around 14psi? should i adjust it or could my gauge be off

 

it could be the switch was not actuily set at 10 lbs... why don tu try to change it and see what happens.

 

yeah i would change it i am sure they are not all perfectly set

 

Check the switch boost range, there are different types....from what I remember, there were 5-15 psi and 15-? switches

 

My switch was set close to 10psi but not right on, i wouldn't worry about that too much.

I found that turning the Allen screw counter clockwise 1 turn will decrease the activation by approx 2psi give or take a little. If i were you i would turn it down 2-3 turns till it activates at 5psi and work your way up from there.

The pump/system has a little lag in it, i would set for 8psi if you want it to come on at 10, and so on.


Use compressed shop air and hook it up to the switch with a vac/psi gauge tee'd in and adjust the switch that way.
By looking at your L.E.D. source for a switching refrence.

This is what i do...