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MegaSquirtPNP2 and AEM Wideband X series

Old 02-07-2019, 08:02 PM
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Default MegaSquirtPNP2 and AEM Wideband X series

Hey guys, I'm in the middle of pulling out an innovate SG1 and going to an AEM 30-0300 X-Series Wideband. I believe I have it wired in properly but my AFR in tuner studio does not move much. It's pegged in the red at 18+ and moves very little. I have tried changing the AFR controller settings in TS but it did not seem to help. Here is the set up so far. Any help would be appreciated.

Car is a 99 NB1 with an MSPNP2

Red from the Wideband is a fused 12v from the battery
Black from the Wideband is pinned to #5 Chassis ground
White from the Wideband is pinned to #21 Oxygen Sensor
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Old 02-08-2019, 03:07 AM
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So you went into tools then afr option and selected aem x series?

Last edited by Don235; 02-08-2019 at 04:46 AM.
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Old 02-08-2019, 04:45 AM
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Yeah, don't forget to read the instructions of the X-series gauge, which clearly state to connect the brown wire to an ECU ground.
Originally Posted by ninerwfo View Post
The “into to megasquirt thread” mentions that the MS3 basic has 5 inputs with built in pull up resistors - and I was just wondering why it would have so many, while the MS3Pro PnP has just 2 (with no pull ups?)
MS Labs: Plug and Play Megasquirt ECUs for ANY 90-05 Miata (NA, NB1, NB2 w/VVT, MSM), including basemaps to get you started ASAP. PM me or email or details.
For support on MS Labs ECUs: Please email, be sure to include the unit's serial number and include a datalog and your current map.
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