1). Any boost, vac, or exhaust leaks? I blocked the 2" pipe coupler at the turbo outlet and put pressure into the cyclone manifold via the center vac port. I am able to hold 30 psi without hearing any external leaks. I have sprayed down the entire intake system with soapy water, and corrected a minor leak at the BISS o-ring. I can not get any response using soap and water at 30 psi or 10 psi or 1 psi. I figured a fast leak might be displacing the water before a bubble can form, so I checked at multiple pressures. I also raised the car onto jackstands and sprayed the underside of the manifold. I DO have my valve cover breather fitting ran to a vented catch can. I have been running this way for years and never had any major issues. 2). Verified mechanical timing? Not yet, but not changes were made on previously working belt setup. Belt has tension and top marks are aligned, I have not pulled the bottom cover to verify the crank sprocket position, but this seems unlikely to be the problem. I am open to information suggesting otherwise. 3). Verified base timing? 5 deg btdc with craftsman electronic ignition timing advance gun. 4). Ignition system Stock coils BWD wires, 1 year old, never had any issues before Spark Plug brand, type and Gap: ngk bpr7es 5). Motor health (Compression Test) Cylinder 1: Cylinder 2: Cylinder 3: Cylinder 4: 6). Performed basic throttle body adjustments? Idle Switch: Simulated by Ecmlink from tps Throttle Cable: good tension, no binding or damage TPS: not yet adjusted, reading 0% at 0 and 92% at WOT BISS: Stuck here, cant set base idle properly. Idle rolls too much. 7). Compression ratio 9:1 8). Any known bad sensors or brittle wiring? none 9). Any DTC/CEL codes? none 10). Electrical system Car off (not running):12.33V Car running:13.7V (voltmeter not ecmlink value) 11). Base fuel pressure and injector values Base Fuel Pressure: 43.5 psi Injector Size (cc/min): FIC 1000cc HIGH Z 12). Properly calibrated and configured wideband sensor Sensor Brand: Zeitronix ZT2 Calibration Date: I believe this unit is self calibrating at powerup, but I dont have a gauge if that is what is meant for this section. 13). Type of fuel Type: 93 octane gasoline Percent of Ethanol: i think 10%? 14). Watched ECMlink how-to videos? I dont think I am at this point yet, but I have watched them, and I have read a bit about V3. Ok guys, So I made some changes and now the car is acting really strange. I am unsure where to begin. I have tested for intake leaks several times, and I cant get a response from soapy water or hear external air leaks. I changed: V3 upgrade FIC 1000 cc injectors cyclone manifold (new inner gaskets, shaft seal 1g rebuilt tb with used ISC I have never ran my car with an ISC and my lack of major boost leaks makes me question the used ISC I put on. In the attached log you can see a major change in the way the car was running when I checked the "ground diag and timing" boxes in the software. I still dont feel confident that its not a hidden intake leak, so I installed my GM map on the MDP line to log intake pressure. What do you guys suggest? I can tell you that unplugging the ISC does not change the rolling rpm. I should also note I am not currently running coolant hoses to the FIAV. Any suggestions to get moving in the right direction is greatly appreciated.