i have a friend with a 92 dx hatch with 94 ls swap...when cruising @ 60-70mph, the problem occurs. it happens when you are cruising and you kinda exceed the speed limit so you let off the gas pedal and then re-apply once you have dropped back down to speed limit and it just falls right on its face...spark plugs are new, dizzy is new, wires are new. all new parts have only 2-3k miles on them. i pulled spark plugs..they are white, my experience says its running lean. like he is losing fuel completely.

pretty much the only way to make the car come out of the stall is to shut the key off and then turn it right back on. and the car will drive fine for sometimes a couple of minutes or sometimes a couple of seconds.

would the pgmfi relay cause this?? fuel filter? O2 sensor? also has no cat-con so i know its not plugged....it does have 2 1/4 pipe all the way back..could it be a back pressure issue?

has anyone ever experienced this? also its not just @ 60-70 its kinda whenever you are just cruising