Audi A4 B7, forge atmos. BOV, testpipe.
During idle at a redlight, I could normally feel that the car was on. Now at idle while stopped, it seems like a fan shuts off... I can tell because the car would suddenly run very smooth when the fan kicked off. It would make me think my car died until confirming it was still on by looking at rpms.... then the A/C gets warm.
When I start driving again, the A/C will return to normal and become cold again.
My car will drop in rpms and suddenly die sometimes when coming to a stop. No bad noises, no clicks or put-puts... it just gets weak and shuts off. This only started happening with the A/C issue. Maybe they are related?