Richelson

Ok, the fact that the rpms aren't climbimg to 2500 indicates that you aux. air valve is stuck closed. My AAV was stuck before and wouldn't go into high idle 2500 or so. It starts and goes to 1000rpm. Now onto the bogging issue. Could be many things but I will try to help isolate some ideas. The AAV adds extra air during cold start since the CSI is spraying and the WUR is in its lowest pressure setting(richest). To make a long story short it could be too rich causing the car to bog since it isn't getting its extra air. Idea #2 WUR (warm up reg.) when the bimetallic strip isn't functioning properly/resistance is out on the WUR can cause bogging on cold start and when you give the car gas it is very reluctant to take it. It will bog more then the rpms will rise slightly. Pressure testing will show if it is in the WUR. It sounds like first check your spark on all wires with a timing light, then the AAV, remove it, clean it, bench test it, replace it if is not functioning correctly, then move onto fuel pressures. HTHs.