speedooo

I have a y7 with a z6 tb/im running on a p75. Depending on how much the temperature has changed since the last time the car was started, it will either idle higher (colder out) or lower (warmer out). I got the tb and im for free, but the fitting for the fitv on the engine side of tb was broken off, so i bypassed it. I could give a shitless about my car idling at 2k for ten minutes when I first start it...but my neighbors definitely hate it when its warming up at 7am. After 10-15 minutes the idle drops back down to about 1200-1400 and eventually after some driving it drops down to 800-900. Im just looking for some input on this because im bored at work and i never looked into it