Exhaust back pressure....
#27
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Re: Exhaust back pressure....
you want to install it in the header before the turbo..
As for ecu type anything that will read a linear 0-5v sensor will work..
If that's not possible a mechanical pressure gauge like boost or blower, etc, can be used..
As for ecu type anything that will read a linear 0-5v sensor will work..
If that's not possible a mechanical pressure gauge like boost or blower, etc, can be used..
#28
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Re: Exhaust back pressure....
A high back pressure in the turbine housing can cause the turbine wheel to slow down. It can cause unwanted stress & thrust load on a wheel & shaft & possible damage to both if excessive or if the turbo is not up to par.
Also excessive back pressure can lead to poor engine power, high egts, etc. It can in some cases re-introduce spent exh gasses back into the motor depending on cam degree & overlap.
Like Tony said, the lower the better.
Proper turbine housing & properly sized exh wheel is needed. It depends on displacement, desired rpm operating area and desired power.
Also excessive back pressure can lead to poor engine power, high egts, etc. It can in some cases re-introduce spent exh gasses back into the motor depending on cam degree & overlap.
Like Tony said, the lower the better.
Proper turbine housing & properly sized exh wheel is needed. It depends on displacement, desired rpm operating area and desired power.
I will be installing mine in the collector. In addition to this, I am monitoring boost pressure at the turbo and then again at the intake manifold as well using the same kind of 5 bar map sensor and logging using the above mentioned method.
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Re: Exhaust back pressure....
AEM sensors has the volt vs pressure, but it depend on your system if you have the option inter those numbers, this what all I know.
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Re: Exhaust back pressure....
Here is where mine is, It's from t1 and I had ceramic coated. It goes to one side of the divided housing before the turbo in the manifold
Here's what Tony suggested to do with the bridge on the turbo to help equalize pressure. Also run an open flange gasket cause it will blow if you bridge it. Turbo is a forced performance 3794 w/ a 1.15ar
Hope that helps with location questions. My s.s line ruffly 2ft long w/ No coils. Reads smooth in the motec and didn't notice any real heat transfer. Don't make the line too far away but not to close. That helps reduce heat.
Here's what Tony suggested to do with the bridge on the turbo to help equalize pressure. Also run an open flange gasket cause it will blow if you bridge it. Turbo is a forced performance 3794 w/ a 1.15ar
Hope that helps with location questions. My s.s line ruffly 2ft long w/ No coils. Reads smooth in the motec and didn't notice any real heat transfer. Don't make the line too far away but not to close. That helps reduce heat.
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Re: Exhaust back pressure....
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Re: Exhaust back pressure....
I log pressure on both halves of the collector with the T1 dual damper kit on a Full Race T4 divided manifold. I've tried both the GT42R with the cut down 7202 wheel, and the precision 7285. Regardless of which turbo I use, I see a pressure differential of 2-3 psi, so I may try playing with the gate to get equal valve lift first. If that doesnt work, I may see about getting a manifold made that is divided with a single 60mm gate..
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Re: Exhaust back pressure....
Emap 2-50.3
Exhuast press-53.1
for those who ask, that's the reason I have a bridge on my turbo. almost a 3psi diff from one side of the twin scroll to the other. Just backing up what Tony said.
Joe, Boost cut FTW! lol
Exhuast press-53.1
for those who ask, that's the reason I have a bridge on my turbo. almost a 3psi diff from one side of the twin scroll to the other. Just backing up what Tony said.
Joe, Boost cut FTW! lol