[69 L88 Camaro]

Hi,
Don't get fustrated with your setup it will just take a littile fine tuning to get your combo happy. The one I have now is a stickshift so it is a little more forgiving about coming down to idle as i jump off the throttle but I will talk about what I have seen. The butterflys will flutter. I have tied my runners together underneath the manifold with 3/8" steel tubing into a common plenum to soften the pulses of the I/R manifold. The plenum is quite large but fits easily even with the roller lifters and splash tray. I have used a plenum on top for power brakes and IAC applications but wanted to hide this one. My butterflys and shafts are quite high like your Crower intake and I try to do all my adjustment HOT. I will back off the idle stops (one per side) and adjust the splitters and cross shaft so all the return spring pressure is on one set of butterflys. Then I loosen the butterfly screws and tap the top of the butterflys with the plastic end of a screwdriver. Not a small screwdriver. Then tighten the butterfly screw. As I move to the next set I tap on the bottom of the butterflys I had just done to help them unstick. You may hear them squeak and pop open as you do. Now close the next set with the splitters and continue setting the butterflys. Start farthest away from the return springs and work your way toward them. Then visually adjust the stops and splitters to fully closed. Crack the butterflys open slightly with the stops and start the engine setting the splitters and stops and cross shaft monitoring the uni-sync. Start farthest away from the return springs. I have had to do this a couple of times but then eveything stabilizes and now all I do is keep the shafts lubed. With the fueling I run open loop at idle and like camcojb said give the engine what it likes. I have tried different timing settings. Retarded softens the engine but heats the exhaust. I use alot of advance. If it is a little smelly at first don't run it in a closed garage. If the I/R intake was easy you would see more of them but when you get this done you will be very proud and happy you took the time to get it "right". With all the throttle blade area this will have alot of power with not much throttle opening. I made a cam type throttle linkage like a 660 Holley tunnel ram carburator secondary to make this less aggressive with the stick. With the automatic it was easier to drive. Let us know about your progress and ask any little question you have. My EFI is setup in Alpha Numeric by the way.