[starspangled6.0]

How much boost does this turbo make on the diesel? The Torque app on my phone\bluetooth OBD2 adapter shows 22.5 psi at WOT. Seems a little high to me.

 

[Cruze2.0TD]

How much boost does this turbo make on the diesel? The Torque app on my phone\bluetooth OBD2 adapter shows 22.5 psi at WOT. Seems a little high to me.

I believe that is correct. It has been a while since I plugged in my bluetooth OBD2 adapter, but I want to say that it runs over 20 PSI at max boost. I'd be interested to know the difference between overboost and regular boost, but really need a passenger to watch the torque app to do that. I dont think staring at my phone for 10 seconds while driving at WOT would be a good idea.

 

[BradHerr]

How much boost does this turbo make on the diesel? The Torque app on my phone\bluetooth OBD2 adapter shows 22.5 psi at WOT. Seems a little high to me.

On my mechanical boost gauge with the factory tune, 23 psi was the max I would see under heavy acceleration.


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[BradHerr]

I have seen over 31 psi during wide open throttle after being tuned!


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[boraz]

Seems a little high to me.

based on what?

 

[grecco]

(where are you guys attaching the mechanical boost gauge? i just got a 2014 with 25k miles few days ago)

 

[Jewel Red 5]

Is that with a tune mine is completely stock only seen 16 PSI highest on my scan gauge.

On my mechanical boat gauge with the factory tune, 23 psi was the max I would see under heavy acceleration.


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[plasticplant]

That number sounds right to me. I think 21.5 - 22.5 is the max I've seen on my scangauge and I'm completely stock.

 

[starspangled6.0]

Seems a little high to me.

based on what?

Comparably sized gas engines. Glad I'm wrong though!

 

[justin13703]

Mine makes 28 psi under full throttle. Not sure why the number everyone sees varies so much. It's on a 30psi boost gauge and it will almost pin it every time. This is with the boost gauge plumbed directly into the intake pipe just before the manifold.

 

[Snipesy]

Your gauge is wrong, or showing absolute, but 28 PSI is really low if its absolute.

Unless the difference with the manifold is that huge, but I don't think it is.

 

[justin13703]

Your gauge is wrong, or showing absolute, but 28 PSI is really low if its absolute.

Unless the difference with the manifold is that huge, but I don't think it is.

The gauge came out of another vehicle that also had a scangauge and it was consistently within 1psi of it so I don't see how it would be wrong. It also sits dead on 0 at idle. I guess it's possible it could have been dropped or something when it was removed, but it seems to be working fine.

I followed a write up on here of how someone installed theirs. Post 19 in this thread shows the same location I used for mine. Hose comes off that fitting, goes about 12" to the electronic sender.

http://www.cruzetalk.com/forum/201-gen1-diesel-technical-discussion/133673-boost-gauge-2.html

 

[Snipesy]

Then it must just be that huge of a loss, subtract six or so and that would give you the relative pressure of the manifold, or what the OBD2 would give you.

 

[BradHerr]

Is that with a tune mine is completely stock only seen 16 PSI highest on my scan gauge.

Do you have the diesel?


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[BradHerr]

(where are you guys attaching the mechanical boost gauge? i just got a 2014 with 25k miles few days ago)

There is a write up in the diesel technical section. I don't know how to link the write up, you can search for it.


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[justin13703]

I posted the link to that write up a few posts above.