MAP sensor weird readings?????????

thething96 · Post by **thething96** » Fri Jun 19, 2009 2:03 pm

Had the car with a very good tune, very stable. Ever since the update, map sensor readings seem to vary from day to day. One day I'm idling at -10.5 psi, the other day -8.8.psi(why have negative psi? just personal preference). Any idea why the changes???

DSMR · Post by **DSMR** » Fri Jun 19, 2009 5:08 pm

Go to settings, units, and you can change it to whatever you want to What kind of map sensor?

thething96 · Post by **thething96** » Fri Jun 19, 2009 10:15 pm

Oem honda map sensor, but having psi as vacuum is how I like it. Every time the readings change, I have to retune all over again, I've done it 3 times already.....

Post by **Gaskleppie** » Sat Jun 20, 2009 2:15 am

You can choose whatever you like in the settings menu.

patrick_yi_82 · Post by **patrick_yi_82** » Sat Jun 20, 2009 2:33 am

I had a similar problem with my MAP sensor, in my case my MAP sensor's ground and voltage was connected to a different power source than the ECU. When I used the voltage and ground from the ECU, it worked w/o any variation.

thething96 · Post by **thething96** » Fri Jun 26, 2009 6:36 pm

Not only do the map sensor readings vary from day to day, also whenever I do a pull(being that its supercharged, and the manifold gets really hot) it continues to run rich even after everything cools down. I played with the iat compensation tables, but its not helping. Any help please.........

Post by **calvin** » Fri Jun 26, 2009 8:47 pm

baro pressure?

thething96 · Post by **thething96** » Sun Jun 28, 2009 3:21 pm

Sorry about the late response, had a really busy weekend. I'll make a log and check it out. Will post soon...........

thething96 · Post by **thething96** » Tue Jun 30, 2009 3:33 pm

went to do some more tuning and I've noticed that afr's change whenever I do a pull. Sometimes it will run richer, I'll floor it and then It'll run lean. Over and over. And by the way, I tried to check any baro corrections, but I'm using pro, and the baro section is blank. Any thoughts.......................

Post by **calvin** » Tue Jun 30, 2009 8:13 pm

just disable baro

thething96 · Post by **thething96** » Wed Jul 01, 2009 10:37 am

How do I do that? When I click paramaters and go to baro corrections, there is nothing to select, it's all blank. Are baro corrections available to tuner version only, because if it isn't, then I don't know why I don't have the option to change any baro corrections??????????????????

thething96 · Post by **thething96** » Thu Jul 02, 2009 10:28 am

has anyone else had a related problem? My map sensor is plugged to the ecu???????? IAT and ECT compensations don't seem to be working properly. Changed the iat sensor and still same problems.........

thething96 · Post by **thething96** » Fri Jul 03, 2009 10:30 am

Well figured it out, finally. Both IAT and MAP sensor were bad and caused the AFR fluctuations. Took long enough to figure out, but done all the same.............thanks.