Worth to forge/modified internals if I cant change any exhaust nor intake parts?

[Martin959]

Hello guys!

Just got back in business with the bugeye sti, but here in switzerland they are quite strict with the parts and so on... So, basically I can modify the internals, injectors, etc... but not things like manifolds, Intercoolers, Downpipes...

Would still be worth to improve all internals, to forge them, change the injectors, fuel pump, etc... ?

 

 

 

Cheers! :D