So had an interesting one. My second turbo stopped working unless under heavy acceleration, when it did come in it would almost clunk and make back pressure exhaust pops.
Needless to say two loads of this and it was off road until I found the issue as I didn’t want to stress tubby 1.
My first thoughts where vsv or hose but nothing was off.
I searched here and found the following
“Just to add to this incase it helps anybody else. When I bought my supra a couple of years ago off an old boy who didn’t really push it the second turbo wasn’t coming online. I replace as many vacuum pipes as I could at the time and still had the same issue and I think as mentioned above I gave the EBCV valve some lube and manual movement and it boosted perfectly from then on”
So I attempted to find and move the offending part. Needless to say it didn’t want to move.
Consulted @Mike2JZand @mwilkinson got the small flat pry bar and spayed it down. It was very crusty but soon was moving free to the point I could move it by hand.
Took her out and it was working perfectly.
Will leave this here incase anyone else has the same issue.
