Okay, lately since I've done the intake swap, the engine seems to be sputtering. It's more noticeable around 3000+ rpm, and it doesn't do it all the time. I'll be looking at the tach, and notice it jump from 2800 to 3000 all of the sudden when it sputters. Could this be timing related? Or do you think it's something more serious? I'm thinking the timing might be retarded a little bit, since I never set it after swapping the intake. I marked the distributor before I pulled it out, and put it in the same way, but I guess it could be off a little bit. What do you guys think?