I currently have an Aus delivered MY99 WRX. It has a apexi pod intake / 2.5" exhaust / Apexi AVCR / larger TMIC. I am considering a bigger turbo for more go.

Could someone please explain the differences in the turbos above - I am looking for a turbo that will hold 17psi to 7000rpm but also without lots of lag (my current TD04 hits 1 bar @ 2700rpm in 4th).

Also - can you run the std ecu with a larger vf series turbo?

Thanks,

RR.