Is a HKS PFC FCON FUN?
 

My s5 basically just has a full 3 inch Racing beat exhaust. Stock turbo and ports. Would a HKS PFC FCON be a good investment? I am not going to spend the money for a stand a lone.

A fuel computer itself won't do anything. It must be tuned. In that respect, any of the piggy-back units will do the job. The majority of the expense will likely be dyno time anyway.

yeah, that and a walbro 255 pump, 10psi is fun :D don't forget to get a boost controller.

I have a walbro and I have a boost controller but I don't have the controller hooked up because I am already measuring like 12 psi!? I don't know how, I'm thinking of buying another boost gauge to hook up. Any thoughts?

No, it's an overpriced piece of electronics.

An A'PEXi S-AFC or equivalent is a much more flexible fuel computer for your needs.
You'll need to learn how to adjust it's setting to give you maximum power from your engine.

If that thought scares you, pay a shop to do it for you.

Welcome to the world of boost creep...


-Ted

what about if the FCON came with a GCC would it be more flexable or as flexable as the S-afc?