Let's finish this.

[greg08]

I got my speed 6 headgasket replaced and everything is good, but the cylinder 1 and 2 aren't firing completely I feel. It's hard to start up and once it gets started i can pull the plug on the 1st and 2nd coil packs without the engine stuttering much, but when i rev it i can tell the difference between them connected or not.. With the all connected it revs up smoothly, without them connect, of course it's not smooth (go figure)..
I'm just confused because if i disconnect cylinder 3 or 4 then engine almost stalls, but disconnecting 1 and 2 doesn't cause that.. Is that normal???

At high rpms it runs really smooth, but at low rpms under load it stuttering..
I want to fix this before I sell it.
I have a cobb ap but it's broken so i'm screwed on checking codes..

[GroceryGtr]

well I would say swap injectors to see if you have some clogged ones, but it wont do much good without an AP to monitor. You could also check/swap your spark plugs. 90% of the time, assuming harnesses are good, its either fouled plugs or dirty/clogged injectors. The other 10% is sensors or bent/stuck valves

[MSMS3]

Swap coil pack locations first before messing with injectors, and see if the misfire follows the coil pack. If so, you know its those two coil packs. Install new properly gapped plugs while doing this.

[Marv]

Any updates for your issue?