Hi guys, I would appreciate your advice on what camshafts to purchase for my EK4. I have no major modifications on my B16A2 engine, just intake, exhaust, pulleys, cam gears, fuel pressure regulator and an ITR p73 ECU. I would like a set of cams that I will be able to start using them inmediately without having to make major modifications at least for a while. Do you know if the Spec 4s will necessarily require a better ECU, higher compression, bigger injectors, etc or those will be just desired mods?

Thanks,

Javier

 

sounds like you want the spec 3's. the IV's are much bigger cams and like more compression and higher revs. you'll need tuning with any set of cams regardless. either will require stiffer valvesprings.