Re: Msd box
I had a problem with the msd 6al. It made my truck run like it was pre detonating in one or more of the cylinders. After running for about 10 seconds the motor would act like a mis-fire, the tack would drop to 500 then shoot up to 1700, then work it's way back down to an idol at 1100. Then do it all over again. I took it off, the truck runs great now. Idol at 800.