yes it will blow yur apex seals quicker if u turbo yur s5 rx-7. listen to "BRIDGED" he really got nice advice on the set up. as for "DAVID88VERT" dude, 3rotors are way better than a v8...if u have connections it will be alot easier and cheaper..but putting a V8 on an rx-7 is really ridiculous..."PLSS TRUST ME"...if david88vert want to put a v8 on an rx7, then why dont he just get a mustang or cobra...the rotary's are made with the rx7 for a reason....."TOTAL BALANCE" and, compare a v8 300hp to 20B 300+hp (with a lighter car) who would bite the dust? exactly...sooo DAVID88VERT, i'm sorry, ur the one who keep yur advice to yur self with yur V8...go get yur self a nice muscle car with the V8 and have fun biting the dusts! :P