Just got done rebuilding my '94 GT. Car had only 89k miles and ran great! These are the mods I put on the car in total. We had a nice car show at my work with a FREE dyno. I figured I should be around 300hp with the mods I put on the car.... Not even close, something is WAY off. I know the dyno is working perfect so no mistakes there. My car dyno'ed at a whopping 176 rwh and 278 ft tq. Looking at the graphs (which i didn't get a print out) the car pulled strong until 4000 rpms and fell on its face after that. I mean the graph showed a complete nose drive after 4000. I don't even think i can keep up with my wifes lexus SUV. LOL. I am noticing the car runs rough and pops when cold and it does it sometimes when the engine is warmed up. I adjusted the rockers and valves this way. Zero lash while twisting the push rod then tightened the rocker 1/2 turn and then tightened locking screw. Car is set as 12 degrees advanced, rockers are riding on the valve tips perfect, there is some noise still coming from the rockers from both banks (was told that is sometimes normal for larger roller rockers), Car idles and sounds great. Vacuum is at 18", compression is between 135-150 between all 8 cylinders. Very very minimal leak down in a couple of cylinders. I was told that the stock injectors SHOULD be able to handle this setup just fine. Reading other forums i was told that the MAF from the '94-95 GT and Cobras are the same and that the ecu has the tune for the 24# injectors not the MAF. Honestly guys i'm lost as to what to do next. I know my way around an engine but I'm mostly used to old school carb engines. Really any help would GREATLY be appreciated! Here are the list of mods i have done to the car. PLEASE someone help me figure out what went wrong with this build. I have all complete pics of the engine tear down and rebuild. '94 stock block with stock pistons,rings and lifters. stock 19# injectors and MAF with stock computer (NO TUNE) new crank and all new bearings and high pressure oil pump B303 cam (cam was degreed to spec) Ford Motor sports double roller timing chain Avenger Aluminum Heads (CNC ported and polished, 2.08 in 1.6 ex, 1.72 rollor rockers with 6.4" holly push rods and using AutoLight 3910 plugs) '93 Cobra intake with lower intake ported and polished, 1" trick flow spacer to clear valve covers. Trick Flow 70mm elbow with EGR delete BBK 70mm throttle body Cold Air intake. MSD coil, 9mm ford racing wires, New Distributor,new cap and rotor. smog pump removed,egr removed 4:10 gears 2 1/2 inch ex. no cats and H pipe into 40 series flows. I do understand that 24# injectors will help and that a tune will help as well. But I can't see them adding the 100+ HP that this engine should be making.