Looking through search and nothing really matches my problem. Today is the 2nd time this has happened. Got up on it on the freeway (deserted) and was doing about 120 6k in 5th gear and my engine seemed to just cut out for 2-3secs then back to WOT, then cut out and back to WOT.

When I got to work I was tossing a Code 2 which is for the 2nd O2 sensor. Could this be my issue as Ive been reading that and a bad O2 wouldnt do something like that. Also I dont have a 2nd O2 as I have it jumpered/piggybacked off of the 2nd O2 sensor.

Engine: B16 OBD0, PR3 ECU
I have a cold air intake, and cat back exhuast.

 

you hit the fuel cu off which should be at 115 mph for a stock pr3 ecu.

 

Really? Because I've hit 140 and ran outa gearing... Oh wait, I betcha my ecu is working right after I swtiched the old cable VSS for the new electronic one and SiR cluster. Im pretty sure that would explain it.