I Have ej20x/y installed with USDM headers, up pipe, turbo, downpipe, tmic etc. I want to run the full twin scroll and I'm pretty sure I have everything jdm that's needed, but I want to know if the downpipe will be same length and if the o2 sensor will cause any problems being on the opposite side of the pipe than the USDM?
I don't know how my mechanic did the swap but judging by the previous post, I'm assuming that my AVCS isn't set up since the A/C does run and I'm using stock ecu, yet I'm told its all working. How can I confirm this?