APSX D1-DIY Wideband Controller and G1 LED AFR Display Kit (GREEN)

Documentation either totally wrong or non-existent. The 'instructions' that were sent with the unit were totally wrong, so even though I carefully checked and soldered, as soon as I connected power it fried the board. The pictures/diagrams do not match what was sent, so I had to interpolate most of it. Documents link to a youtube channel that no longer exists, on-line support is sketchy at best. This may have been good several years ago when this board date stamp says it was made, but its not good any longer. You'd be better off to build your own or spend money on a well supported controller that actually has documentation that matches the board and wiring. Waste of time, waste of money.

So to start, as mentioned the documentation does show a slightly different board, however the board is labeled for what goes where.The extension harness and O2 harness do not have the correct wire colorings for how the board is wrote. Brown and Green are the missing Grey and Yellow. In my case Yellow was brown, and Grey was green.Do not power and ground with with your factory wiring (i replaced my 4 wire o2) as it will cause jitters to the ecu from all other sensors. Powering it separate resolved those issues.My only complaint is that the screen does have a flicker to it like it is not getting enough power from the board. I may try powering the gauge separately at some point but it is not enough to bother me.

This is one cool part. I have not hooked it up yet but it looks cool and if it works as good as it looks it will be awesome.

I LOVE my system. Very easy to install with plenty of wire length to work with. The small LED display fits easily in many places without looking out of place. Had really helped me improve the performance of my Solex 40 ADDHE carbs. While I had an issue with the display after running great for a few weeks, I contacted service and they had it resolved and a replacement shipped in less than 12 hours. Buy with confidence.

I have 3 of these units. All in use. They are extremely reliable and frankly the cheapest quality solution to your wide-band needs. I own a performance shop and recommend this unit to all my customers. Install is easy as pie. The units and displays are small enough to easily conceal but still remain accessible. Buy with confidence