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I have just got a dyno report on the Patrol (99 GU, TD42T, 3in exhaust, std turbo, std intake, no intercooler, 33in muddies).
History...
The car has been up north for about a year and it has finally come back to Brisbane for a little break, though it goes back in April. So some time to fix some things. I noticed a lack of power since I left it and my boost gauge seemed to confirm my feeling.
I would normally go to 12 PSI and sit there the entire way up the rev range, now it dips to about 9-10 about half way up and stays there.
I thought that It should have a dyno and see if they could figure it out. I was told that if there was anything wrong that they would let me know but it sounds like it just needs a tune.
So... from a sluggish 94.9hp to a whopping 111.6hp. I don't know a lot but this seems really low. $250 later I was told that it may need a fuel pump soon, but that it was all good.
I thought that I would check my facts before talking to this dyno shop again.