All over the show

[Rickie3]

Just installed my pyro and boost gauge into my 2000 3 litre patrol as i'm getting ready to install the dawes system, took the old girl for a spin and i'm a no brainer to these things!,have to say ive also installed a brand new straight through 3 inch exhaust not cat or muffler, when I hit a slight hill the EG climbed to just over 500 degrees, when cruising at 100kph sits around 300 is this normal? also the boost gauge is all over the show, gauge is a Speco boost gauge, boost gets to around 9psi then all of a sudden drops to 0 under accleration, then spikes to 15 then just drops again, its like its loosing vacuum, I did notice the intercooler is showing a small sign of oil weep? when cruising the boost sits at around 5psi then just drops again,then comes back to life and shoots up to anything to 10-15psi its like the needle has a mind of its own, can anyone offer some advise please as to what could be causing these weird things with the boost gauge, oh and its a brand spanking new gauge

[mudski]

The boost being all over the shop is normal for these Patrols. Hence why we fit the dawes and needle valve. You will also see your EGT's will be lower too. Also if your IC is leaking you will be "pissing in the wind" trying to set the dawes valve. Any boost leaks and you will just be winding the dawes in and you r boost levels won't rise. You need a 100% sealed intake system for the Dawes to function correctly.

[Rickie3]

I had the IC down the metal shop it sat there for 3 days untouched, so pissed off they didnt do it, so I just bought it home and put it back on as I was eager to hear how my new exhaust system sounded plus try out my new gauges, the IC will be taken out and sent to another shop, I want the tanks removed and seals taken out then welded up and pressure tested my mate has his done and it made a huge difference, is it also possible to have a vacuum leak from the gauge to the intercooler pipe?, I used plumbing tape on the gauge end

[Rickie3]

I dont intend on installing dawes till I have the IC done, also do you consider EGT over 500 extremely high on a very slight hill and also under acceleration on straight flat open road?

[mudski]

It is possible to have a vacuum leak. Anythings possible. Make sure things are sealed up and you will be right. As for the EGT's. I think 500c is high. Others may not. Considering mine sits at 200'c on the highway. Have you blocked the EGR?

[Hodge]

Rickie, my CRD used to hit 500 easy up even a slight hill. This was before the dawes and needle were installed. After it the boost was more stable and I'm yet to see it go above 400. Then after that the new non leaking IC was fitted and that dropped my EGT's even more.
And like yours, before I installed everything, my boost was a yoyo, just bounced all over the place.

[Rickie3]

Have you blocked the EGR?

Not yet Mark, was going to install that when I do the dawes

[Rickie3]

Rickie, my CRD used to hit 500 easy up even a slight hill. This was before the dawes and needle were installed. After it the boost was more stable and I'm yet to see it go above 400. Then after that the new non leaking IC was fitted and that dropped my EGT's even more.
And like yours, before I installed everything, my boost was a yoyo, just bounced all over the place.

Oh this makes me feel better, I was thinking ive done something wrong

[Rickie3]

This is the exhaust system I bought http://www.ebay.com.au/itm/251465696...84.m1497.l2649 , it fitted up perfectly without any mods to it, all I did was weld on a nut for the pyro gauge sensor, cant say i'm 100% with the system it sounds really fluttery when idling, and I am actually surprised that its rather quiet

[mudski]

Why did you buy a zorst with no cat?