So my car was running ok, and started up ok and didnt have idle issues. I recently got a walbro 255 and blitz boost spec controller installed. I than got my car tuned. After tune the next day I noticed I had to crank and press on the accelerator to get it started. The idle holds at 2k rpm for about a minute than drops to normal. Its fine after it warms up. While driving though it will be fine in gear,but if I happen to drop in neutral the car will idle funny. It will go to 1400 and drop to normal and repeat. The afrs are going off the chart leaning out, and than evens out at 15. Does anyone one know whats causing this? vacuum leak? bad tune? cold weather? ( i did get it tuned in summer)