Map sensor reading low, 99kpa at sea level
Posted: Wed Feb 14, 2007 11:01 am
Hi,
After building and testing my MS my kpa is reading low, should be 103 ish for sea level, I live right on the water can't get any close to sea level than that.
I checked the manual for this problem and found this,
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If the MAP sensor doesn't appear to read correctly, you can check:
* If your MegaSquirt MAP sensor is reading too low, but responds to vacuum and pressure, then you have the wrong ".inc" files in your MegaTune folder. Copy the files (you need are "kpafactor.inc" and "barofactor.inc") from the "Turbo" sub-folder into your MegaTune folder, and everything should work. Place the correct files in your MegaTune directory (for older versions), or in the mtCfg folder (if it exists). (The "turbo" files refer to the ability of the MPX4250 MAP sensor to sense boost, not to the actual configuration of the engine.)
* If your MAP sensor reads low and doesn't respond to vacuum or pressure, it is likely in backwards. Verify that it is in correctly. If it isn't, unsolder it, turn it around, and solder it back in. You will have to bend the pins the other way - be careful not to break them. You probably haven't damaged any components by installing the MAP sensor backwards.
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So I have a responsive map sensor, but it's reading low. There isn't a turbo sub folder in the megatune directory. Also the files "kpafactor4250" and "barofactor4250" are in the megatune folder, are these the correct files? Do they need to be altered? Do I need to activate something within megatune?
I have searched this forum
MS-1 V2.2, using MSnSE from the Mega CD,
Thanks
-George
After building and testing my MS my kpa is reading low, should be 103 ish for sea level, I live right on the water can't get any close to sea level than that.
I checked the manual for this problem and found this,
-----------
If the MAP sensor doesn't appear to read correctly, you can check:
* If your MegaSquirt MAP sensor is reading too low, but responds to vacuum and pressure, then you have the wrong ".inc" files in your MegaTune folder. Copy the files (you need are "kpafactor.inc" and "barofactor.inc") from the "Turbo" sub-folder into your MegaTune folder, and everything should work. Place the correct files in your MegaTune directory (for older versions), or in the mtCfg folder (if it exists). (The "turbo" files refer to the ability of the MPX4250 MAP sensor to sense boost, not to the actual configuration of the engine.)
* If your MAP sensor reads low and doesn't respond to vacuum or pressure, it is likely in backwards. Verify that it is in correctly. If it isn't, unsolder it, turn it around, and solder it back in. You will have to bend the pins the other way - be careful not to break them. You probably haven't damaged any components by installing the MAP sensor backwards.
------------
So I have a responsive map sensor, but it's reading low. There isn't a turbo sub folder in the megatune directory. Also the files "kpafactor4250" and "barofactor4250" are in the megatune folder, are these the correct files? Do they need to be altered? Do I need to activate something within megatune?
I have searched this forum
MS-1 V2.2, using MSnSE from the Mega CD,
Thanks
-George