I have a 2000 Acura 4 door EL with a H22A4 engine swap.Upgrades include a skunk 2 pro series throttle body....skunk 2 pro series exhaust system....DC sports headers and downpipe......AEM direct cold air intake....B&M fuel pressure regulator....light weight fly wheel and clutch kit.....Hi-flow fuel pump. My car was running perfectly fine up until 3 days ago when i replaced the origional intake manifold with a pro series Skunk 2 intake manifold. Install went well with slight massaging of the firewall to create the needed space. PROBLEM: Wont cold start. Check engine codes are #3 and # 5 which are related to the MAP sensor. And #14 which is the I.A.C. Tried swapping vac lines..coolant lines.adjusting idle control. The instruction that came with the intake upgrade states "ECU upgrade required for vehicles already using OBD2" What does this mean? Should I be converting back to OBD 1 using a neptune system or somthing of the sort? PLEASE HELP.