Reads like an exhaust leak then. At low engine speeds the leak is significant but at higher speeds not so much.

 

whatever happened you caused it... so go back one by one and start again... you will find it...

 

Check you have the right plug on the solenoid on the cam tower for bank 1, that is where the misfires are. The solenoid on top not the one between the plugs. If you have a durametric check cam deviation, that will confirm it.

 

Your car isn't mafless by any chance, is it? I had a terrible terrible rough running when I switched to mafless... Turned out I had a shot o2 sensor.

+ 1 to the cam solenoid plug, its something I tried too, but it didn't end up fixing it.

Edit: The solenoid bracket has broken before on some cars, make sure that its not cracked. The solenoid is in-between coilpacks.

 

Good call Tim 94 I took the connector on and on for the cam tower on the bank 1 and problem went away.

 

Note above a little normal carbon build up after a short test spin.