HEY Y;ALL i just picked up a 2000 audi s4 i was told by a couple ppl that i should put a aftermarket intercooler on it and also get the stage1 ecu tune on it. everything is stock right now so the stage1 would be best for it untell i get more upgrades. for the all option stage1 tune is like 600 buck do you guys think thats worth it?