Well I got my new header on and my intake back on, but now I can't get my idle to settle down. It's idling at like 3000 RPM, and I think the thottle shaft is somehow not closing all the way. When I took the intake off, the fast idle screw (tune-up screw) was pretty much flush against that metal plate, not there's about an 1/8th of an inch space, and I can't figure out why. I took the intake assembly off as 1 entire piece... I had it resting on some rolled up newspapers... anything on the underside that could've gotten bent that would do this?

Nevermind, I figured it out: When I reconnected the accelerator pedal's linkage to the carb linkage, I was holding the throttle open near the tune-up screw, while tightening down the screw on the shaft below the tune-up screw, so my screwdrive could be vertical. That little bit of extra torque made the linkage line up a little wrong, making my throttle open a tiny bit more than normal.

When I loosened and re-tightened the screw with a shortie screwdriver and *not* holding the linkage open a tad, everything lined up just right :-)

My exhaust really sound sgood and smooth now (I was running the MSA 2.5" aluminized Turbo exhaust system with the stock exhaust manifold). Just sitting still and blipping the throttle, I can tell that the throttle response is a *lot* better, even when the engine's cold! I think that annoying "percussion wave" will be gone too. The exhaust note sounds smooth an mellow, with some growl when you kick open the throttle. I can't wait 'til I can take it to the muffler shop to have them line everything up right in the tailpipe for me so it doesn't vibrate against anything...