i have a s4 and my question is can i put a s5 turbo and manifold on with out modifing anything? and what kind of power am i looking at. this si what im looking at. a stock manifold for $80 or a s5 turbo and manifold for $200 which way should i go and from what i heard i will gain 30 hp off of the s5 set can someone verify this for me thanks

 

Yes it will bolt right up,mazda upped the boost on s5 motors,so maybe but probably not,however the s5 manifold has two wastgate ports,which helps fight boostcreep,thats always nice.I think the extra power in s5 is due to higher compression and higher boost .