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If you fit a Dawes valve with your EGR blocked, it’s best to bypass the ECU control solenoid at the front of the engine bay, just behind the air filter. If you do this, you may also need to fit a small needle valve so that you can adjust and control the turbo’s spool rate. Also if you go with full manual boost control, you should limit your Dawes valve to no more than 15psi below 3000rpm.Quote:
Originally Posted by Leighw85
THIS page should explain it all if you’re not sure.
Cheers,
Boost will vary depending on load. Even the smallest incline / decline can see your boost rising or falling 5psi at highway speeds. Don't worry and just enjoy it. At 100kms/hr you should see around 8-10psi most of the time. Go up a hill and expect to see it at 15psi. All depends on climate + load + engine speed.
Do not go past 550 degree on pyro! Do not go past 10psi under 2000rpm (so adjust your needle valve accordingly). Do not go past go! Do not collect $200. Period!
Cheers
my Patrol sit on about 10psi on 2000rpm is that ok?
i only have a dawes fitted no needle valve. Is that ok?
10psi at 2000rpm is good with a bit of throttle and load, but should shoot up to 14 - 15psi if you nail it. Some people can get away without a needle valve, particularly if you've adjusted the VNT stop screw down a bit and provided you don't have any limp mode issues.Quote:
Originally Posted by Leighw85
I seem to be getting boost spikes.
I have my boost set at 13psi through my Dawes valve, but for a spilt second at times my boost rises to about 15psi. but shoots right back down to 13psi.
Is this a problem? Or is it normal?
In other words what can be dine hahaha
Cheers :)
These are the gauges in my truck, this video is of a mates truck though.
http://www.youtube.com/watch?v=lHiOmlN7F3I
They look pretty cool i reckon.
It’s fairly normal in most cases, but you can improve it by turning down the turbo actuator limiting screw about ½ a turn. Then your boost should just rise evenly and stop at 13psi. Personally though, I would set it to 14 or 15psi if you’re only using one Dawes valve and you don’t have any limp mode problems.Quote:
Originally Posted by Leighw85
Check this link if you're not sure how to adjust the limiting screw: patrol4x4.com/forum/members/geeyoutoo-46168/albums/adjusting-vnt-grub-screw-843/
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Ok people, I have a question
Just been on a long drive down south. And have a few questions about the boost and EGT on my car.
I can get boost up to 105km/h but if I want to sit on 110-120 I get no boost which means my car runs at about 500 degrees.
Any ideas why this is? Or what I can do!
Have you bypassed the ECU boost control solenoid?Quote:
Originally Posted by Leighw85
If not, thats why.
My boost sits on 14-15psi constantly above 100km/h unless I take my foot off the throttle and EGT never go above 420c on the longest hills.
Nah I have not bypassed that mate. How do or can I do that?