All Things Mk5 > R-Tech Zone
What can R-Tech do with this hardware?
Adrenaline:
I have never heard of a catback yelding 20-30hp the best it can give you is a better sound ,the ko4 is a small turbo so getting 20 to 30 hp from a catback upgrade isnt right 5hp seems more thinkable you will reach 330-335hp my friend with our without catback
rich83:
The OEM cat back will limit power. As will having no intake.
MC71:
You'll benefit for the RS4 FPRV as you already have the HPFP fitted and a better than OEM IC, no brainer for £40 plus fitting.
Is a bit restrictive with the OEM cat back on. Yes a HPFP and better than OEM IC will benefit even a standard car but your nearly there so why not get a decent (BCS) 3" cat back?
Niki will only say "it's all about the flow" which yours is not at the mo. I think around 320 ish but Niki will get the max out for you no problem.
Adrenaline:
Not attacking you brother but it wont unless hes running a GT30 turbo then i would say go with a catback for better flowing but a ko4 is small enough to make a 2.5" catback limits his power potential
Adrenaline:
Not trying to hijack but is there any ko4 car running anywhere between 370-380bhp without wmi?
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