Logged boost vs mechanical boost.
- Thread starter darkness
- Start date
They read the same.
Ok, lets start over. Is your CTS reading off across the board, or is it only off at full boost? I can tell you the stock MAP sensor is only 2.5 bar (approx 36 psia). It generally maxes out around 22-23 psig (it will read a little higher at lower barometric pressure). If it is reading off across the board, the sensor isn't scaled correctly in the tune. If it is only off at max boost, your just saturating the sensor.
At idle.
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I’m in Vegas, 2200+ elevation. The 13.5 baro is correct.
From the beginning.
I only have actual numbers based off of max boost. Pulling my trailer out of town, climbing a hill, my cts3 monitor was reading 24psi, which is right on based on the tune which at approximately 80-85 mm3 fuel at 2200rpm puts the psia that the boost table is written in at 35.4-36.6. While the mechanical gauge (psig) was reading 35+. And I’m sure it’s 100% pure coincidence that it’s reading close to what the boost table (psia) is at.
As far as I know, it is a stock map sensor.
In my log, I’m certain I have the wrong PID for boost. It’s not calcactboost like it should be.
Alright guys, I have my flame suit on! I put the new sensor in and same shit. Ran boost tests with my tester and the mechanical was always higher than the monitor. I didn’t even bother checking the wiring as it was too linear to be that. I went into the tune and sure as shit, the scaling was different. It wasn’t even off by any number that made sense, nor do I know why it was changed? I put the stock table in and all is good now. HAPPY DANCE!!! Thanks for all the help guys and I’m sorry 
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