Corders' "Progress" Thread

ignition on (powering the ecu?)

Rich.

hammer?

fire?

Rich.

Its on COM3, which tunerstudio looks for while it cycles through its ECU search. Tried both baud rates it searches for with no luck

Apparently some laptops just won't connect for whatever reason, so trying with a different one

Ok short update

Remembering to disarm the immobiliser means the ECU receives power. Laptop can now see it

Right, got round to doing a few more things over the past week. First was making sure the ECU was still talking to the laptop just fine



Next up was pulling wires through the firewall into the airbag cubby hole. This was a pain as the hole i had available was only just big enough to fit the small AEM connector through, so some filing occurred and success was made. Both AEM wire bundles and the MAP line now going neatly through one hole. I also took the opportunity to cut down the white/black, green and blue wires on the AEM loom and fold them back into the wrapping as they aren't needed and would only confuse me




AEM were also extremely generous on their supply of wire length!




Then it was time to start wiring up the AEM wideband and the fancy "5 times faster than OEM" AIT

First up i had t work out which wires to use from the original O2 sensor. This was a major ballache given I have a 4-wire sensor in my 1994 1.8 loom and there was little to no definitive help out there. Luckily, asking on Facebook and much reading of wiring diagrams showed that i needed the Red/Blue and the Black/Blue wires on the loom, which correspond to the blue and white wires on my 4-wire O2 plug






Having read the wiring diagram supplied by AEM and receiving help from Facebook (specifically Spanner and Hammer Speed Shop who are documenting their MX5 build in excellent captioned-photo detail)
i soldered the brown AEM wire to the white O2 wire and the white AEM wire to the blue O2 wire; the two black wires remaining on the O2 sensor loom i just cut short again for reduction of confusion purposes




Next i fitted a ring terminal to the black AEM wire and put it under the ground block for the ECU amongst other bits that go into here




Finally the red AEM wire was soldered to the very convenient switched 12v live of my RPM switch




Next was time to fit the wideband sensor to the exhaust...easy as undoing the old one and replacing it




Then after moving a brake pipe out of the way, i fed the wiring through to the connector i had fed through the firewall and pushed it together




Gauge is now sat next to the ECU ready to be used for some road tuning




Next up was getting ready to fit the AIT (air intack temperature) sensor, which involved removing my jackson racing intake....and this roll of toilet paper that must have been in there since JAE last year




Out came the MAF and the hacksaw, which produced this work of art ready to be drilled and tapped for the M12 x 1.5 thread of the AIT






And finally,i didn't quite get to the finish line with this one - found an old 2-pin connector pair in my pile of random junk i keep hold of, so the two AIT wires went in one end, with the other end to be soldered onto the Red/Black and Black/Green wires on my 1.8 MAF loom (can be any way round as polarity of the sensor is irrelevant, but given i have a red and a green wire it sort of suggests itself)




So now all i need is to add the AIT into the mix, hook the freshly charged battery back up, then i can actually try starting the car

Thanks, was thinking how to achieve this now they're in...think it will be a case of essentially lining the outside of the hole with a cut up one and using some sealant round it