2012 GU boost controller?

[Coldcomfort]

https://gfb.com.au/products/boost-co...nt-vgt-turbos/

Anyone using one of these? What’s your thoughts on it?

[Bidja]

https://gfb.com.au/products/boost-co...nt-vgt-turbos/

Anyone using one of these? What’s your thoughts on it?

Have no experience with these controllers but guess it would be just a boost controller and a needle bleed valve in a single compact assy?

What boost control method are you using at the moment and what are your concerns?

Before spending the $200 maybe I can suggest another control method to try first.

Have u an ECM remap?

[mudski]

It’s simply a Dawes and Needle valve in one. If it works, which I can’t see why it won’t. It’s actually a neat option in my opinion. Back when I was a Official Dawes distributor, I had plans and drawings of something very similar.


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[Coldcomfort]

Its neatness is what attracted me to it. I have a dawes valve at the moment. From what I can see that only stops over boosting. I have my boost max set to about 18psi. My boost is still all over the place. This might be a nice alternative to the dawes valves.

[Bidja]

So u have stock ECM, full manual boost control (using Dawes + spool needle valve)?

Boost all over the place is concerning. Guess you have the current Dawes (3barracing _ black body unit) improved spring and ceramic ball?

Interested in what cruise boost are you running @ 100kph flat road and what boost when you sightly increase eng load?
Guess you run cruise boost around 16 psi mostly?

[Coldcomfort]

Dawes valve only. No needle valve. Still uses the Nissan boost solenoid. I think that the weak link. I have a Beaudesert exhaust and one of those aluminium air cleaner tops. EGR is blocked. I also have Redarc boost and EGT gauge.

[Coldcomfort]

That what confuses me. If I am driving up long hills, like the Adelaide hills, it boosts to about 14psi max. And EGT rises. Doesn't go into the red but definitely goes higher. Normal. When on flat road no extra load it hovers around 16-17 PSI. EGT drops way down.

[Bidja]

That what confuses me. If I am driving up long hills, like the Adelaide hills, it boosts to about 14psi max. And EGT rises. Doesn't go into the red but definitely goes higher. Normal. When on flat road no extra load it hovers around 16-17 PSI. EGT drops way down.

What EGT level hauling at 14psi? Maybe just working, for your set up but yes lower PSI = >EGTs
Do u experience limp?

Just read this.

[Coldcomfort]

What EGT level hauling at 14psi? Maybe just working, for your set up but yes lower PSI = >EGTs
Do u experience limp?

Just read this.

EGT for just flat and level driving is about 200c. At 14 psi under load it gets to aroung 400c. Never in the red and to be expected. I always thought that a turbo would be allowed to spool up higher under load than on flat normal driving.

[Bidja]

EGT for just flat and level driving is about 200c. At 14 psi under load it gets to aroung 400c. Never in the red and to be expected. I always thought that a turbo would be allowed to spool up higher under load than on flat normal driving.

These EGTs are low actually, so no problem there. I run 180hp /530 N-m FMIC / Procharge stage 3 / 4" induction and cruise 280-350 / haul hard goes 500-550C.

Keep under 600 for CRD (550 very safe).....

Need to spin up fast early/low down for spool up but need to keep boost under control _ management of vanes opening.