Well, after reading a few threads on this
forum, and others, since the old 2.8l TD, pre common rail diesel was helping me live up to my name of old plodder, I decided to do something about it.
Put in a boost gauge first and found I was getting the following boost pressures on full throttle.
2000rpm - max torque - 7psi, 2500 - 8 psi, 3000 - 9-10 psi, 4000 - 12 psi.
Checking with others the paj shoud be getting 12 psi from 2500 up.
I know it has been low for a while, since my mechanic checked it about 3 years ago.
So I installed a manual turbo boost controller between the turbo and the wastegate, as
well as a EGT gauge from Thermoguard just in case.
It is now a different car on full throttle. About 20% more power in that 2000 to 3000 rev range, and maybe 10% above that.
Boost on full throttle is now -
2000 - 10 , 2500 - 12 (yeah) , 3000 - 13, 4000 - 14
If the old rule of thumb is 10hp (8 kw for those youngies) for every 1 psi of boost, my guess is about right.
Now SWMBO is very concerned I am going through a mid life crisis, and I was under strict rules that no way is the paj going to make that 'whoooosh' sound. I said no, and even my rev head son said it wouldn't, and he was believed before I was. (there is a moral there somewhere)
But, the day after I hooked it up, for some reason and unbeknown to me, the pipe from the turbo to the boost controller came off, so the waste
gate stopped working. And you can all guess what happened, the only fail safe was the manifold safety valve, which makes a nice 'whoososh' sound almost as good as the ricers. Was I in deep trouble when the wife drove the car to the library!
Fixed it last night, and made the wife drive me to work. She now likes it, since she likes to put her foot down too.
Well to be honest, she is one second quicker around the local race track than me, and she was the one complaining about the wipers not working to
well in the rain coming back from
Canberra one time. Looked at the speedo and she was doing 130, suggested she slow down and they did work a lot better at 110.
So it has been an interesting week.