Hey guys. My 32 gtr is completely standard besides visual mods, exhaust and gauges swapped for aftermarket ones. My car has felt like it has been performing a bit shitty for a whole now - several months. Just no pull on the top end. I have plans to go for a 300kw build for a while because of this but nevertheless I have still been driving her around taking it easy.
However the other day I was pulling up a hill and she literally wouldn't climb over around 4,000, since then she won't climb over that mark under load but free revving it will hit limiter. I'm thinking turbo issues. I've checked all lines and they are fine. The obvious maf sensors, I've changed the blow off valves to other standard ones I had because they could just be leaking boost. Spark plugs changed and yeah. All lines sussed and nothing.
What do you think?