Originally Posted by
MJ_RST
These are very hard to get decent power from over standard with little mods. Like your finding out. You could fit all three of your suggestions and still not get 200bhp.
The chances are, the other st170 you mention, reached 200 because of the dyno inaccuracy.
its a stunning car and making great bhp but no way on earth will those mods make 200. mj is right the dyno was fake