58X 8H Available Inputs/Outputs | AEM
5 posts / 0 new
Last post
digital_hoon
Offline
Last seen: 4 years 5 months ago
Joined: 08/11/2015 - 07:31
58X 8H Available Inputs/Outputs

Hello,

I'm considering using the LS 58X plug and play harness with an Infinity 8H and am trying to determine if I will have enough inputs/outputs for my goals.

It's being used on a N/A LS that will eventually see nitrous. As of now, I know I need outputs for fuel pump, fan1, fan2, A/C on, and tach. That would leave me with one lowside output for either MIL output or Nitrous. In the wiring instructions, the high side 0 outputs is already wired to an alternator connection. Is there an available output that I'm missing in order to run both Nitrous and Mil output?

As far as inputs, I'll need A/C, nitrous, clutch switch, and VSS. By default, Dig3 is assigned to TruboSpeed_Sel, and Dig4 to VSS signal. If I use the available Dig5 for A/C, can I change Dig3 to accept the clutch switch? That would leave me with Analog 10 for nitrous, and Analog 11 for Traction control switch. The wiring instructions show Analog 16, 18, and 19 being used for DBW and Pedal.

 

I'm hoping somebody can help confirm if I'm calulating this correctly. I appreciate any and all help! Thanks!

digital_hoon
Offline
Last seen: 4 years 5 months ago
Joined: 08/11/2015 - 07:31
I've been going off of the

I've been going off of the PDF instructions for the 8H 58X plug and play harness and the base session pinout in the 8H section.

I believe I understand the outputs, they would go as such for me...

LS0 - Fuel Pump

LS1 - Coolant Fan2

LS2 - Coolant Fan 1

LS3 - N2O Outputs

LS4 - A/C

LS5 - Tacho

The basic inputs are pretty straight-forward, as you said. When it comes to using Dig3 (instructions say it can be used for frequency or switched input), how do I use it as a switched input? That would be perfect and allow for...

Dig3 - Clutch

Dig4 - VSS

Dig5 - A/C

Analog 10 - Nitrous 

Analog 11 - T/C Switch

 

Last question - after assigning inputs, there are inputs assigned to multiple functions. Is there a way to disable the analog inputs I don't need, like ChargeOut Temp, Airbox Temp, EBP_raw, etc so they don't show up in the Pin Out menu? Or should I just be sure to only use those inputs on the tables I need?

Hopefully this all makes sense. Again, I really appreciate all the help!

AEM_NS
Offline
Last seen: 19 min 27 sec ago
Joined: 06/06/2014 - 09:31
Opps, we'll need to change

Opps, we'll need to change that.  The digital inputs are two types: either frequency or switch and unfortunately they can not be both.  The only digital switch input on an 8h is Dig 5.  

As for lowside outs, LS4 and LS3 (pins C1-1 and C1-22) available for use but not populated.  You'd need to add in a pin for either output. 

It looks like you'll be limited to using Dig 5 for A/C request and Analogs 10/11/13 for clutch switch, nitrous switch and TC slip target trim.  Dig 4 is fine for VSS and you also have VR flying lead front/rear wheel speed inputs as well. 

Some inputs don't need disabling.  For example, if you're not using Charge Out Temp or EBP_raw, they'll just read in the background and have no influence over anything else so long as you don't enable functions that reference those inputs.  

digital_hoon
Offline
Last seen: 4 years 5 months ago
Joined: 08/11/2015 - 07:31
OK, makes sense that Dig3 can

OK, makes sense that Dig3 can only be used as 1 or the other. Can I get a discount for de-bugging? haha - smiley 

Looking back at the analog inputs, it looks like Analog 13 is used for the oil pressure sensor, 16 is for throttle, and 18/19 are for DBW. 

That would leave Analogs 10 & 11 open for clutch, nitrous, and T/C Slip. Seems like I need to look at the bigger brother Infinity 8, or running N2O on its own system. 

Thanks again for all the help! Awesome customer support!

 

 

AEM_NS
Offline
Last seen: 19 min 27 sec ago
Joined: 06/06/2014 - 09:31
Ah yes, you're right.  Analog

Ah yes, you're right.  Analog 13 is oil pressure and this harness uses the factory LS oil pressure sensor.  A DBW LS motor uses up a lot of I/O and adding additional features/functions could push you out of the 8h and into an 8/10.