Aem x series wideband and boost gauge kit

#Aem x series wideband and boost gauge kit full#

The white signal wire from the AEM gauge is fed into the engine bay, the same as the earth wire.

A ring terminal can be used to attach it to the earth block to the right of the washer bottle. The black ground wire can be fed through the firewall in the same place as the Wideband sensor wires. It is suggested that you cut further away from the fuse block than in this picture, to give more room to work with. Look for the thin black and yellow wire coming from the back of the fuse block. Cut it so the red wire can head towards the interior fuse box, the black and white wires can head to the engine bay, and the blue wire can be tucked under the dash.ДЄ source of switched power is the 10A meter fuse (Mk1) this controls the reverse lights and (fittingly) the instrument cluster. The first step is to cut the excess insulating sheath off the loom, so the wires can go their separate ways. Some gauges have a brown signal earth too. The white signal wire can be connected to the original narrow-bands signal wire for the easiest route to the ECU. The black earth wire can be grounded in the engine bay. The red power wire is connected to an ignition switched 12v power source it should have a 10A fuse protecting it. Pushing the connector together before attempting to pull it apart makes the task easier.ДЇor hooking up the wideband sensor signal wires, it is as easy as plugging one end to the wideband sensor connector in the foot well, feeding the loom into the vent, and plugging it into the back of the gauge. Unplug the OEM Narrowband signal wire, the single black wire connector above the cam angle sensor. If you want to connect an output to the ECU, the WHITE signal wire from the gauge must be connected to the original narrowband signal wire which then in turn will head into the ME221 on the O2 Signal line.

The sensor in the exhaust sends a signal to the gauge (which has an inbuilt controller) this controller then converts that signal to a 0-5V voltage and sends it to the ECU.ДЇor the gauge to function it needs: a 12v power supply, a ground, and an input from the sensor.

The AEM wideband system consists of the sensor and its loom, and the gauge and its loom.

#Aem x series wideband and boost gauge kit full#

The stock ECU ignores the NB signal when a medium-high load is detected (13.5:1 target AFR), when the engine speed is greater than 4500rpm, or if at full throttle.ДЄ Wide Band (WB) sensor allows accurate AFR detection in the region of 10-18:1 and therefore can be used at any load - allowing the optimisation of fuel for all areas of the VE table. The Narrow Band (NB) sensor in stock MX5вЂ™s is limited to detecting a stoichiometric AFR, so is only useful when tuning for idle and for light load cruising where the target AFR is 14.7:1. However, if you are considering tuning parameters of the map yourself (Cold Start Enrichment, Acceleration Enrichment (AE), Injector deadtime etc.) or want to set up more advanced features like closed loop fuelling then it is about the most useful tool you can own. Most chassis dyno facilities will have equipment to measure the air/fuel ratio (AFR) so they can accurately map the fuelling requirements of the engine. It is not strictly necessary to have a permanent wideband installed on your car in order to run a standalone ECU like the ME221/ME442.