Originally Posted by Lapida
Recently I installed the MSD BTM and I would like to know the correct form to use. I have to set the control knob from 1 - 3* to ****** the timing before crank the engine or while driving?
You need to figure out how many degrees of timing you need to pull out to prevent your engine from detonating.
The BTM will pull from 1 to 3 degrees per psi of boost.
So if you set it on 1 and produce 8 psi of boost the BTM will ****** your timing 8 degrees.
I believe the maximum advance recommended under boost is 28 degrees, so you will need to figure out what you need to set the BTM at to keep your advance limited to 28 degrees.
You should have gotten instructions on the BTM's usage with the unit.
If not, it is probably available on the MSD website.