Hi everyone, I have just bought a 99 WRX GC8 which I thought was factory except for the 3" TBE & Frontmount intercooler.

Upon closer inspection today I have discovered that the turbo is infact a VF28 and not the factory TD04, however it is still the factory ECU and is NOT remapped or tuned in anyway.

My question is, If I get a hold of a version 5 or 6 STI Ecu, am I able to swap my stock WRX ecu for this? The thought being, the V5/6 model STI runs the VF28 as its factory turbo which would mean I don't need an aftermarket ECU & retune.

What would I need? Standard injectors from a V5/6 Sti also?

Thanks!

P.S. I am trying to do this as cheap as possible as this is an unexpected cost but would also love to keep the VF28 rather than revert to do TD04