Major missfire/car shutsoff when shifting to 4th. HELP.
so i had some freeway pulls last nite with my buddies.
25psi. 50t. crower s2 cams. full bolt ons. 2 m5 nozzles of meth. race gas. 105oct SCT race map.
id go thru 2nd thru 3rd fine, but once i shifted into 4th or into mid 4th, my car would cut completely out, missfire (if i gave it gas after itd misfire and not go anywhere) then the car would completely shut off.
we switched coil packs w/ a basically brand new coil pack. did another pull, and did it again. misfire shifting into 4th, cutout, then shut off.
im completely stumped.
new stock coil basically.
mopar 7.5mm wires
and i have about 2k mile old 4306s that gave me no issue at any point in time.
only does it shifting into 4th, and no other gears.
i did a few runs earlier in the day on pumpgas/23psi and had no issue.
im stumped. what would cause it to cut/missfire so bad and then shut whole car off?
mike
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