OK - reviving this thread! I am in the midst of an “OEM+” fiesta build on my 2017 fiesta with 26k miles. The car has spent most of its life unmodified, but is currently running an e30 tune, panel filter, whoosh boost hose, whoosh v3 FMIC and some suspension bits.
I’m trying to create the car I believe ford would have if they released a Fiesta RS. For that, I think 280-300 whp with a nice mid-high powerband fits the bill perfectly. After lots of research, the S280 seems like a no brainer and the safest way to reach those power levels without excess heat, crazy wheel spinning low-RPM torque, etc.
I want to build this the right way - a platform to generate 280-300whp as reliably as humanly possible. With that said, a few questions:
- Downpipe: should I be upgrading to a 200 cell cat? I’d love to keep the stock cat in place if possible for the environment. And just to keep things simple. But if the sport cat will making a big difference I’d like to know. I definitely don’t want to go catless.
- Fueling: I have seen conflicting views on the use of uprated injectors without a bigger HPFP. Dizzy’s article suggests it leads to dangerously low fuel rail pressure, while another tuner highly recommended them. Is it somewhat silly to choose a higher RPM turbo like the S280 while leaving the stock fuel system intact?
- Ancillaries: I plan to order a whoosh crossover pipe, TS 14 PSI wastegate, and potentially ST200 airbox along with the S280 kit. Is there anything else important that I’m leaving out? Has anyone had success with turbo blankets? I’ve read the heat shield is a pain to reinstall.
-Install: should I be ordering a new turbo oil feed line? I know it’s viewed as best practice. Anything else I should order to support a smooth installation process?
thanks!!