Ok guy I have a 93 eg hatch with a 95 b18b manual rumning off a p73 with ls stock maps. Im having an idle problem when I run the car hard ( switching gear at 5k). When I come to a stop my idle drops down to about 400 and car bogs but doesn't stall. I can drive it but it hesitates and feel like it misfires, I have to turn the car off and start it back up and everything goes back to normal (idle goes to 900 and no hesitation). If I drive the and swift a 4k it won't do it. Any suggestion on where to start?