914 overboost
in General Tech Discussion
12 years ago
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by Rob Seaton » 12 years ago
Looking at your TCU memory printout the MAP sensor look good; 1411 millibar is about 41 inhg.
It looks like the servo is not backing off enough; it should be less than 92% range at over 40 inhg.
Scope is the calculation/graph between the airbox pressure and the target pressure parameters. You should not change anything here.
Go to the Config page, Calibrate, Read Calibration. The numbers should be:
servo offset-60
servo range-900
throttle offset-60 but this changes with throttle calibration
throttle range-710 also changes with calibration
airbox pressure sensor calibration parameter A-12219
airbox pressure sensor calibration parameter b-250
ambient pressure sensor calibration parameter A-6720
ambient pressure sensor calibration parameter B- -37 (neg 37)
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by Greg Regan » 12 years ago
How do you go to the config page If it was overboosting the red light is supposed to come on if the pressure reaches 1550 is that right tha map gauge in the plane would flick past 45 but the download indicates that's not accurate so the servo can be adjusted to open up a bit more
greg
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by Rob Seaton » 12 years ago
Config page: from the main menus hit C, then C again and then R for read.
- The light comes on at 45 inches, a bit of a buffer zone so you don't get lights going off every time you overshoot.
- I dont think you should circumvent the system by adjusting the servo, we need to find the cause and fix it, not band-aid it.
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by Greg Regan » 12 years ago
Thanks Rob
I don't think the download has a config page in it but I will head out to the hanger and give it another go and report back
Greg
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by Greg Regan » 12 years ago
the version is TLR V4.6A
Main Menu
monitor scope 1 scope 2 history-buffer throttle quit
This is what I see on the first page
Greg
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