HELP! Major Car Problems

[Joeblow]

Alright well here's the situation, I was driving my car (1990 Eagle Talon TSI 2.0L, Manual Transmission) and all the sudden it started idleing really low, I lost major throttle response and the car shakes alot when at low RPM's. Also their is ticking (possibly vacuum leak maybe??) coming from the engine. So I took it home and thought maybe I would try changing the spark plugs and wires. So when I did this I found one of the spark plugs was blown for sure, SO...I changed them all and I thought I was going to be good to go...Well no....Now when I start the car it still shakes and my throttle response still sucks! I dont know what's wrong with it....any ideas? Oh and the exhaust sounds choppy too. Any ideas would be really appreciated!
Thanks guys

 

[SuperSleeper]

I hope it's not a case of the vented blow off valve. :thumbdown

 

[rowlex]

Check your intercooler piping, sounds like you could have blown a hose off.

 

[95TSiNewbie]

If all your hoses and I/C pipes are still connected then check the BISS screw... Or what happened to me, the ISC died. If you take the ISC off you can still drive the car and the low idle will go away.