So I've been looking at the "boost target pressure" and "manifold absolute pressure" to determine my actual boost value and they do not seem to be the actual boost psi. Looking at the manual, it indicates that there's a dedicated parameter called "boost". I cannot find that as a variable on my log parameters. Any ideas ??

 

Manifold pressure is boost pressure. You get a negative reading under vacuum and positive under boost.

 

That's what I thought....it tops off at 22.6 psi n won't go higher when I know I'm making more

 

I believe (but not positive)You need cobb's Pressure sensor to read higher. The stock doesn't go that high.

 

Yep...I've got a Bosch 3-bar MAP Sensor from PTF....weird

 

22.6 is above average from what I have seen. I only see 20 on a good day (ots cobb stage 2). Who did your tune PTF?

 

I'm on a custom tune. Working with one of the Cobb guys.

 

Hey guys, for the boost values you'll need to look at a different pressure channel (Boost Pressure Corrected) when switching to a 3bar TMAP sensor.

When running the OEM TMAP sensor you look at the pre-throttle pressure channel. Manifold pressure channel is just a calculation based on an internal model on the 997.1 Turbos. There's no TMAP sensor in the intake manifolds on the 997.1 like on the 997.2 and 991 turbos.

Let me know if I can help in any way.

Dzenno@PTF

 

Thanks Dzenno, will log it n see what happens!

 

Hi, same Problem on my 997.2 Turbo. I install the cobb stage 2 100 octane map and cant find the live boost gauge..

Thanks