okay gang I'm hoping someone here can help
I get a misfire and I need to know where to look I ve replaced wires coil pack battery plugs,

Now the misfire come in hard and CEL flashes w/MSD dis-2 hooked-up
by-pass the msd the mis is not that bad.

heres my set-up

420a
8.5:1 forged pistons
vortec sfmu
hahn turbo system fmic system @ 18 psi
MSD dis-2
motorcraft 440cc injectors

all the connection wires on the msd appear to be in good shape

could there some other source where i would lose injector pulse or trigger ?

the car did run like a bat out of hell for a year then the other day i got CEL 43

thanks

well seeing as how the MSD seems to be crapping out on everyone this month I suggest keeping that off for a while and resetting the ECU and see if it goes away after a plug wire/plug change

where is your msd located? i have read a lot of people with their msd box in the engine bay are having problems. i put mine under the passengers seat and so far good to go.

yeah seems like the excessive underhood temps just cook that MSD unit.

yup under the hood,,,so that must be it I'll send in for repair 80 bones