01 prelude sh, pretty much stock besides the whole intake and exhuast deal.
I bought it from a used auto lot and it ran fine for the first few months. Now the car seems to have trouble while idling, sometimes even stalls. Ive also noticed alot of black smoke when I get on it and a bit of white when just normally driving. It seems to use alot of gas now as well. I replaced the plugs and checked for any vaccum leaks. Im working on borrowing a compression tester, but for now I could use all the help.