i recently bought a 00 a4 1.8 that has a apr chip, cat delete exhaust, and a stock diverter valve. when you floor it, or really just give it gas, in any gear except 1st, the car shakes and my boost drops. its tuned to 20 psi, but as soon as it hits 15 in any gear, it drops. the guy i got it from said it needed a drive shaft, but i took it out and everything seemed fine. the cel is on because of no cat, but when it sputters, it blinks which leads me to believe its a misfire instead. so im guessing i need one of those 100$ coil packs eh? any recommendations on places to order from?

 

they are not 100 bucks, they could be free, go to the dealer and have them check your vin to see it they have been upgraded


but my suspicions are coils