[Skylinemotorsports]

Rehash of old threads I am sure, but didnt want to bump an old one..

So I was having misfires on 3 and 6, figured good time to change the spark plugs. Bought NGK 95770 and gapped to .022.
Cheers
After I was done with the install I started it, it seemed to idle abit high, around 1k rpm, but settled down to 600 after about 1 minute. Figured it might be computer resetting or whatnot. Got in the car to drive it and it was really sluggish and loud when when driving in the neighborhood. Almost feel no torque when putting down the gas, and it seems excessively loud even at 2500 rmps..

I took it back to the house and not sure how to move forward, anyone have good suggestions?