I learned first hand how finicky these motors can be if timing and the ECu are not setup properly from the start. There is a rundown at http://www.lilevo.com\mirage\ in the Mitchell's files but also in the FSM (factory service manuals). If the ECU and timing and idle RP
M, then you will get surge just like with a DSM, and likely make it harder to start also. Read the FSM and maybe more information can be gleaned from there; it has even too long since I owned a 4g15 equipped car that I cannot remember the exact process.
Thank u so much. my first hunch was the ECU. thats why i am ever so thankful to Cuda68 for speedy transaction with the sale. im happy to let you guys know my cold start issue was resolved with an ECU replacement. now i can move on to my other quest. thank you once again.