Ignition problem?

[Petersho1]

First of all: 60K done (full) plug wires 2years old (20K), fuel pressure OK.

My baby stall, cutting off, only when I'm driving like 60Mph 5gear and I release gas pedal just a little, like to 58Mph
What's wrong, fuel delivery looks fine, coil? bad plug wires? (motocraft), ground? but why only when I'm slowing down (just a little, without full relese gas pedal?)
I think weather is helping (humid, rain)

I have F/R gauge and it's dropping (out of range) when stall.

Overal car runs good.

It's 92'

 

[Rockledge]

Have you tried pulling codes?

 

[Petersho1]

Yes, nothing. Sometimes I'm getting 157, it's becouse of Pro-Flow MAF.