Fuel cut in boost
 

I recently replaced the head gasket as it blew while i was driving to work, After replacing the head gasket I drove the car back and forth to work a handful of times and then stopped driving it for about a month as it was starting to get cold here. Went to go for a drive the other day and as soon as the car starts to get into boost it bucks hard like it is losing fuel or spark. In the log is shows that the injector PW is dropping to 0 but i'm not sure if it cutting fuel because it's misfiring or misfiring because it's cutting fuel. You can see this happening around 64 seconds in the log and i'm thinking it may be a wiring issue?

I know my tune is not good but it had been running decently, a bit rich maybe, before this happened.

My car is a 90 with a MKturbo setup, dw300 fuel pump, ID1050 injectors, Rev MS2 basic, running on E85. I Don't have a flex fuel fuel sensor but I generally fuel the car from a can and test the fuel and it has always come out around e70.

Log and tune posted below, Thank you in advance for any insight.

Stock coils? 2.8ms of nominal dwell time is low for stock coils, iirc. I don't see any safeties kicking on though, so yeah, this is a bit of a mystery - should note there's some increasing timing errors as you approach the cut off moment, but no sync loss - except when it stalled going back to idle(?).

No stock coils, I'm running Toyota cop.