I see the following on my freeze frame data:
: Intake Manifold Absolute Pressure : 53.8 inHg :
That's around 26 psi. I'm running stock K24 turbos, but I have the lighter aluminum impellers - Speedriven upgrade. I'm supposed to be boosting max 21psi.
Is my boost too high or is that intake manifold absolute pressure parameter output means something else?
: Intake Manifold Absolute Pressure : 53.8 inHg :
That's around 26 psi. I'm running stock K24 turbos, but I have the lighter aluminum impellers - Speedriven upgrade. I'm supposed to be boosting max 21psi.
Is my boost too high or is that intake manifold absolute pressure parameter output means something else?
Member
Quote:
: Intake Manifold Absolute Pressure : 53.8 inHg :
That's around 26 psi. I'm running stock K24 turbos, but I have the lighter aluminum impellers - Speedriven upgrade. I'm supposed to be boosting max 21psi.
Is my boost too high or is that intake manifold absolute pressure parameter output means something else?
That's very high if the reading is correct. It might briefly hit that but then drop back. Can you monitor live data stream?Originally Posted by CL55_Serge
I see the following on my freeze frame data: : Intake Manifold Absolute Pressure : 53.8 inHg :
That's around 26 psi. I'm running stock K24 turbos, but I have the lighter aluminum impellers - Speedriven upgrade. I'm supposed to be boosting max 21psi.
Is my boost too high or is that intake manifold absolute pressure parameter output means something else?
Will try that. I wonder if my wastegates aren't working right
Quote:
Originally Posted by Geraldius
That's very high if the reading is correct. It might briefly hit that but then drop back. Can you monitor live data stream?
Member
So I checked up on this further and I believe your boost pressure actually converts to about 11.5 psi if you were to measure it on a boost gauge. When you convert from MAP to boost you need to subtract 1 Bar. The difference is PSIA (Absolute) vs PSIG (Gauge).
Thanks, that helps. From doing simple math from the freeze frame data, I think I understand it now.
It's 67.6 inhg (intake manifold absolute pressure) - 29 inhg (barometric pressure) = 38.6 inhg which converts to 18.95855 PSI.
So I was boosting around 19PSI when I tripped the computer with the misfire code. Am I doing the math right?
It's 67.6 inhg (intake manifold absolute pressure) - 29 inhg (barometric pressure) = 38.6 inhg which converts to 18.95855 PSI.
So I was boosting around 19PSI when I tripped the computer with the misfire code. Am I doing the math right?
Quote:
Originally Posted by Geraldius
So I checked up on this further and I believe your boost pressure actually converts to about 11.5 psi if you were to measure it on a boost gauge. When you convert from MAP to boost you need to subtract 1 Bar. The difference is PSIA (Absolute) vs PSIG (Gauge).
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