MSefi.com read only forum (Jan.15,2018)

Matt Cramer wrote: That is how MAP sensor readings work; they drop under vacuum and climb under boost.

That's what I was getting at. My blower is pushing more than 10psi into the intake which should make the MAP reading increase, not decrease. Right?

I just had a thought which may or may not be related. The MAP value begins at 99.5 atmospheric and then drops as the engine fires and moves inverse to RPM. My boost gauge is reading 12 psi give or take, confirming the boost condition yet the MAP value seems to be running in reverse. Is this correct ...

I tried adjusting the pots, beginning with R52, in a wide array of positions but it doesn't seem to fix anything. This is rather frustrating because I had this problem previously but can't recall how I fixed it. In addition, I've installed a stereo noise filter in the switched 12V line going to MS ...

The idle is extremely intermittent due to the RPM dropping off to zero periodically. I assume this is due to a drop in ignition, but it may have something to do with the signal itself. I have no clue. Here is a visual: rpm.jpg

I am running the v3 board with VR ignition input. I have gone over the ...

I'm wondering if there is a good resource for learning the finer secrets to the magic of EFI operation and tuning? I would like to fully (or at least partially) understand the theory behind EFI and IC engines before I get myself too deeply into this and potentially screw something up. Are there any ...