Accuracy of the OEM PIDs/Sensors
#1
Accuracy of the OEM PIDs/Sensors
Anyone know how accurate the OEM PIDs/sensors (i.e., water temp, AIT off the MAF, oil pressure, etc)? I know the OEM gauges were dummied-down to basically sit in the middle of the scale, then turn red when things have already gone bad. But do the OEM sensors still communicate accurate info back to the PCM? For example, does the OEM water temp sensor transmit accurate water temp back to PCM, but the dummied-down OEM gauge won't display it. Just wondering if I invest in an OBDII Scan Gauge (like PLX DM-200, Aeroforce Interceptor, MSD Dashhawk), will these devices be able to pick up accurate water temp, AIT, etc off the OBDII/CAN ? Not sure if I will be required to install new individual sensors and controllers to be able to read/display accurate info. I'll be putting in a separate wideband O2 sensor, controller, and gauge, but was hoping I could get other PIDs off the OBDII/CAN and display those through an iMFD multi-display gauge. Thx.
#2
RE: Accuracy of the OEM PIDs/Sensors
it's a good question Q, i know from reading
posts about fuel pressure readings using
the interceptor, that they are quite different
from what i observe with my autometer fuel
pressure gauge.
i think the OBDII data readings are relatively
accurate, to a certain degree
posts about fuel pressure readings using
the interceptor, that they are quite different
from what i observe with my autometer fuel
pressure gauge.
i think the OBDII data readings are relatively
accurate, to a certain degree
#3
RE: Accuracy of the OEM PIDs/Sensors
ORIGINAL: DoctorQ
Anyone know how accurate the OEM PIDs/sensors (i.e., water temp, AIT off the MAF, oil pressure, etc)? I know the OEM gauges were dummied-down to basically sit in the middle of the scale, then turn red when things have already gone bad. But do the OEM sensors still communicate accurate info back to the PCM? For example, does the OEM water temp sensor transmit accurate water temp back to PCM, but the dummied-down OEM gauge won't display it. Just wondering if I invest in an OBDII Scan Gauge (like PLX DM-200, Aeroforce Interceptor, MSD Dashhawk), will these devices be able to pick up accurate water temp, AIT, etc off the OBDII/CAN ? Not sure if I will be required to install new individual sensors and controllers to be able to read/display accurate info. I'll be putting in a separate wideband O2 sensor, controller, and gauge, but was hoping I could get other PIDs off the OBDII/CAN and display those through an iMFD multi-display gauge. Thx.
Anyone know how accurate the OEM PIDs/sensors (i.e., water temp, AIT off the MAF, oil pressure, etc)? I know the OEM gauges were dummied-down to basically sit in the middle of the scale, then turn red when things have already gone bad. But do the OEM sensors still communicate accurate info back to the PCM? For example, does the OEM water temp sensor transmit accurate water temp back to PCM, but the dummied-down OEM gauge won't display it. Just wondering if I invest in an OBDII Scan Gauge (like PLX DM-200, Aeroforce Interceptor, MSD Dashhawk), will these devices be able to pick up accurate water temp, AIT, etc off the OBDII/CAN ? Not sure if I will be required to install new individual sensors and controllers to be able to read/display accurate info. I'll be putting in a separate wideband O2 sensor, controller, and gauge, but was hoping I could get other PIDs off the OBDII/CAN and display those through an iMFD multi-display gauge. Thx.
#4
RE: Accuracy of the OEM PIDs/Sensors
ORIGINAL: rlh6805
Data display PID's from an OBDII generic scan tool are of the 'filtered" variety. Yes, they are as accurate as you will need for "viewing" this information. Now, if you are acctually doing calibration work to the vehicle you will need a much more sophisticated interface tool. These cal tools link directly with the controler and read much more accurate, non filtered data.
ORIGINAL: DoctorQ
Anyone know how accurate the OEM PIDs/sensors (i.e., water temp, AIT off the MAF, oil pressure, etc)? I know the OEM gauges were dummied-down to basically sit in the middle of the scale, then turn red when things have already gone bad. But do the OEM sensors still communicate accurate info back to the PCM? For example, does the OEM water temp sensor transmit accurate water temp back to PCM, but the dummied-down OEM gauge won't display it. Just wondering if I invest in an OBDII Scan Gauge (like PLX DM-200, Aeroforce Interceptor, MSD Dashhawk), will these devices be able to pick up accurate water temp, AIT, etc off the OBDII/CAN ? Not sure if I will be required to install new individual sensors and controllers to be able to read/display accurate info. I'll be putting in a separate wideband O2 sensor, controller, and gauge, but was hoping I could get other PIDs off the OBDII/CAN and display those through an iMFD multi-display gauge. Thx.
Anyone know how accurate the OEM PIDs/sensors (i.e., water temp, AIT off the MAF, oil pressure, etc)? I know the OEM gauges were dummied-down to basically sit in the middle of the scale, then turn red when things have already gone bad. But do the OEM sensors still communicate accurate info back to the PCM? For example, does the OEM water temp sensor transmit accurate water temp back to PCM, but the dummied-down OEM gauge won't display it. Just wondering if I invest in an OBDII Scan Gauge (like PLX DM-200, Aeroforce Interceptor, MSD Dashhawk), will these devices be able to pick up accurate water temp, AIT, etc off the OBDII/CAN ? Not sure if I will be required to install new individual sensors and controllers to be able to read/display accurate info. I'll be putting in a separate wideband O2 sensor, controller, and gauge, but was hoping I could get other PIDs off the OBDII/CAN and display those through an iMFD multi-display gauge. Thx.
So how close is "filtered" vs "actual" data, percentage wise? For example, if my "filtered" OBDII feed water temp says 180*, is the filtering still within +/- 3% of actual water temp (175*-185*)
Thread
Thread Starter
Forum
Replies
Last Post
Dan04COBRA
Archive - Want To Buy Ads
1
09-30-2015 11:46 AM