hey guys, im new here but ive got a few questions: firstly my friend has a used magnaflow resonator that fits my b7 2007 audi a4. i need to know if its worth the 200 dollars im thinking of paying for it and whether my warranty is void if i replace the resonator. and an approximate horsepower increase a wether or not the cabin will drone like the magnaflow catbacks do. i was thinking of buyig a miltek catback soon but im not sure what to do

much thanks for any help!!!

 

Not worth 200 imo

 

i second that its not worth it. it might go and make it alittle louder, but i dont see it really being noticable. second, like the noise you wont really feel a power increase due to the fact that the rest of the system is all stock.