ok im new i need some info can your swap the s4 motor into the a4 i want to get to least 270hp on low boost and 400hp on high boost can this be done with the 1.8 and if so what turbo would i use

 

Ummmm thats pushing it on the 1.8 270's no prob but thats running probably around 22psi, to do more than that you would have to build the internals and 400 crank or wheels??? I really think thats pushing it even with a big *** turbo like a gt3071r you would damn near need a turbo off a diesel truck lol..... as for swaping the motors theres really no point its not worth it, you can go buy an s4 for less lol