Holy Hell Holy Hell!!!
 

Plz Plz PLz HELP
i started my car (00 s4) tongiht and it started to sputter went around the car no flat tires no nothing smelled the exhaust and it smelled like i was burning staright alcohol????? Well it continued to sputter and when i went to drive it shook and shook and shook the entire car baddddd. I got home called my buddu and i took him for a ride cuz hes a mechanic well kinda anyways he notice that my boost gauge wehn i put it to the floor went up to where it was supposed around 20-24 pounds to and then started to rapidly fall talking way up then way fast down. I think i already had some bad catylitic converters so i know that. i have no idea what where hoe when it is i need help plz plz plz
thanks

did u get a cel??
look for codes...

im not an audi tech but maybe a coil or something?

get a VAG-COM and some software....sounds like u got some misfire codes maybe a bad coilpack...get a vagcom and post up the codes when you get them

i ran an obd scanner and got a p0300 code random misfire but i changed all the spark plugs about 15xxx miles ago?

with copper plugs or something more expensive? were they properly gapped? copper plugs should be changed every 5-10k miles. why dont you just pull one of the spark plugs and look at it?

X2... its the cheapest place to start!