im installing emanage blue on a 1998 maxima and i was easily able to connect the main harness and it worked perfectly. i have just now finished splicing all 6 injector wires from the injector harness but the last wire (black/red) is supposed to be a ground. i am using a mix between hal's emanage diagram, the pos engrrrish instructions and a comprehensive supra mkiv installation guide, and the supra guide has the injector ground connected to a seperate ground on the ecu harness than the main ground is connected to. my question is on our application is there another ground on the ecu i need to connect my injector harness ground to or do i connect it to the same one as the main harness (#55 on stock ecu pinout).



if i do connect both grounds to the same wire on the ecu harness, do i connect them in any specific order (such as the main harness ground being connected closer to the ecu than the injector harness ground or vice versa)? thanks.

 

do you have aftermarket/larger injectors than stock? I only ask because the Emanage Blue can alter the A/F ratio with only the main harness wired in by altering the maf signal just as a safc would...but you only add the injector harness if you want to alter the inj duty cycle as well which is simply for more advanced tuning of the fuel to seperate injectors individually and such...

also, I am sure you can share the ground, and it wouldn't matter in which order you splice it I would think, but you should confirm that with someone else just to be sure...

 

PIN 25 is a ground on the ECU and I wouldnt mix the grounds. Wire them seperate.

I used the below Pinout from Dandy Max

How come you didnt go with the Emanage Ultimate ??

 

thank you matty for that diagram

 

thank you for the quick replies.

yes, i have 555cc injectors, im currently just installing all the harnesses because next weekend im pulling everything out to do my turbo kit and id like to make sure the emanage is working correctly before i boost.

because im not only poor but i have zero experience with any type of engine management system. sourcing everything i needed to produce this twin turbo setup is exhausting enough that i decided to just get emanage basic because i dont plan on running high boost for a long time. for now, all i really need to do is have an effecient way to manage my injector duty cycles and im not to keen on just using a mechanical unit (fmu/fpr) so i had to spend the cash on emanage because its the only step up from that i know about. ultimate may come later, but injectors and timing control should be enough for a while. thanks for the diagram and ground answer.