I currently have MXP catback, tein coils /varrstoen rims/ HPS intake/afr gauge. I am looking at buying an mxp down pipe/o2 houseing/test pipe and getting it tuned. Anyone have a similiar setup that could chime in on how much whp they are getting? I know the Arashi hits about 400whp or something at 500 at the crank. I would be happy with 350 at the wheels is this doable with the stuffed turbo ? I had recently sold a g37 and bought one of these and I love look so much more than the G but its a bit slow for me as it currently sits.