3bar Posted November 21, 2020 Report Share Posted November 21, 2020 Hi Help please Wiring a LS3 up and it has as oem a Bosch Map sensor 0 261 230 146, this LS3 is going to be boosted......so I am trying to find out / figure out if the oem sensor is boost capable, before splashing out and getting a 3 bar external sensor, does anyone have a calibration / value for this existing sensor ? google fu throws up other people asking this same question Thanks for the help Quote Link to comment Share on other sites More sharing options...
Ben C Posted November 23, 2020 Report Share Posted November 23, 2020 thats good for 28Kpa boost, so no its not good for you. not sure nay factory NA car uses a MAP sensor capable of reading much boost, let alone 2 Bar boost, it doesnt make any sense for them to sacrifice accuracy for increased range for no reason at all. it is kind of odd that the LS3 can even read positive pressure. i thnk you googled the wrong part number, heaps of info if you google 12591290 you get the info. that is the GM part number, the other one is the Bosch number. Quote Link to comment Share on other sites More sharing options...
3bar Posted November 23, 2020 Author Report Share Posted November 23, 2020 thanks 28kpa is perfect, that would make it a 2 bar sensor, 1bar positive pressure, only aiming for .6bar thanks, yeah I was trying the bosch part code...... Quote Link to comment Share on other sites More sharing options...
Vaughan Posted November 23, 2020 Report Share Posted November 23, 2020 2 minutes ago, 3bar said: 28kpa is perfect, that would make it a 2 bar sensor, 1bar positive pressure, only aiming for .6bar 28kpa above atmospheric not psi, 28kpa is approx 4psi. 2 hours ago, Ben C said: kind of odd that the LS3 can even read positive pressure. you can still get positive pressure in a naturally aspirated engine depending on where the intake is and how fast you're driving. you can also get higher than 'atmospheric' pressure if you are below sea level or due to weather conditions so being able to read a small amount of positive pressure can be very useful. Quote Link to comment Share on other sites More sharing options...
koracing Posted November 24, 2020 Report Share Posted November 24, 2020 On 11/22/2020 at 7:23 PM, 3bar said: thanks 28kpa is perfect, that would make it a 2 bar sensor, 1bar positive pressure, only aiming for .6bar thanks, yeah I was trying the bosch part code...... .6bar is 60 kpa.... Which is larger than 28... Quote Link to comment Share on other sites More sharing options...
3bar Posted November 28, 2020 Author Report Share Posted November 28, 2020 my bad at mental math's conversions, thanks for pointing out the error in my math's, saved me from trying to use that, external 3 bar map sensor on its way Quote Link to comment Share on other sites More sharing options...
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