Today I replaced my turbo back decat 2.5" exhuast with a full 3" H&S system. My car was mapped by Andy Forrest a few months back running a vf28 but I've read in various threads that you need a remap after fitting a 3" system?

I dont have any figures but I asked Andy at the time of mapping for circa 300bhp. My friend is now looking to replace his td04 with a vf28 and I have considered swapping him so I can trade that in for Andy Forrest's hybrid version but if im after further power. Would this be worth it or am I better sticking with my vf28 for potentially 330bhp??

99my
vf28
standard injectors
3" decat
STi ver6 intercooler
Apexi FC ecu with commander

 

Save your cash and stick with the 28 for a bit more top end/torque. I think the 04 Hybrid is good for 290-310 all told. I know it allegedly spools like a whirling dervish, but it's not as if the VF28 is exactly lacking in this department itself...

 

I thought the hybrid would have been capable of a bit more combined with the quick spool up rate but if thats the case, its not worth the money for the sake of a few rpm. The second map should be cheaper and ill ask nicely for a few extra horses.