i have a 91 civic dx with d16z6 motor.
car breaks up under any boost level ive had 2 different great tuners look at it and its going on a few years now and im frusterated. Around 6k any amount of boost breaks up ive tried everything i think its wiring on inside of car but not sure. Last motor did this same issue as well since then everything i mean everything new except for inside wiring. Seems like ignition is breaking up
75.5mm bore aries 10.5:1 pistons.
Crower rods
Css block
Car coverted to obd1 twice thinking first time wires went bad now have monotec harness. New 3 weeks
6k ferrea valves
Crower cam 63444zt
Comp springs and retainers.
vms cam gear
vms race dizy
Arp studs
je pro seal 76mm head gasket
Sk2 intake 66mm throttle body
Golden eagle fuel rail 8an braided lines
Rc1000cc injectors
Neptune rtp v2
1320 top mount
Gen 2 precision 5558 .63 trim
46mm precision wate gate
Sk2 throttle position sensor
hondata 4bar
Aem 340 fuel pump with wiring
260 gt plus 104 gas
aem wide band wired to a26 a25 a11
Any other info need will supply. It is not the tune 100% i have had 2 of the best tuners look at it must me electrical i just dont know where to start. Sounds like ignition breaking up please i hope some one has run into this as im out of options. Seems like detonation. Blew a cometic gasket with only 8 miles on car tring to figure this out fix a test