I'm going back to the dyno on the 23rd of feb. Have added a 1000cfm MAF , much better spark plug wires, throttle coolant bypass .... Well you can tell I'm on a wife budget here. I'm hoping for 300hp. :s
1000CFM MAF? big one........is the screen gone? I descreened my MAF. Those screens suck for air flow. With just the flomasters and the screen gone, my LT4 got 306 hp to the wheels. Is your LS1 an automatic?