Hey folks, I'm new to the whole car scene and my first car project is a 2000 Civic. The car I got is a 2000 Civic ex with a y7 partial swap. The car did have the y8, but a previous owner had made the swap. I bought the car with a bad bogging issue when idling and coming in and out of first and second gears. Found out it had a y7 block, with y8 intake and tb. also had y8 ecu. I am aware that y8 had vtec, so I picked up a y7 intake with tb and ecu for y7 (p2e-a12). Car runs much better no bogging, but upon starting the car, it idles around 1200 rpm, and a few seconds later climbs to 2200. after that every few seconds it drops to around 1000 and then back to normal. the car doset set off the MIL, and voltage at iacv is there, and i havent found vacuum leak. Ive read about resetting ecu, but ive let it idle for 30 mins and it just fluctuates idling the whole time. Any advice appreaicated!

Mike