EvoIIIAj

iTrader: (1)

Hi all,

As you all are aware, or should be aware I guess. The JDM VIII does not come with a factory map sensor like the USDM VIII does.

On your ECU's I think pin #73 goes to the factory map sensor.

I don't have anything in pin #73 so my friend as I were discussing possibly putting a connector in there that's wired to the output wire of my electronic AEM boost gauge and changing up values in ECUFlash/EvoScan and then start reading/controlling boost through the ECU.

Has anyone ever attempted this?

Here's the JDM VIII pinout:

HyperDisorder

iTrader: (1)

I use pin 73 for my LC-1 logging with 3C, and pin 92 for my MAP sensor logging with 38. If your rom ID is 96260009 then I think that you'll need to change the address at 3C to 8409, but if you're on 93660005, then you won't have to change any addresses - I didn't.

EvoIIIAj

iTrader: (1)

Thanks.

HyperDisorder

iTrader: (1)

No worries. Happy to help. Get in touch if you need anymore help or suggestions for the install.

What's your rom ID?

EvoIIIAj

iTrader: (1)

Thanks bud. I'm on 96530706.

AndyCT9W

I thought the JDM evos came with better map sensors than the USDM? My JDM IX has a factory 3 bar map sensor, I thought VIIIs would be the same.

EvoIIIAj

iTrader: (1)

Yeh the JDM IX comes with a map sensor from factory but the JDM VIII's have none.

HyperDisorder

iTrader: (1)

JDM 8's are the unlucky ones. Got a shop to drill and tap my intake manifold to fit the map sensor. At least the intake still had the mounting boss.

EvoIIIAj

iTrader: (1)

I guess I'm on a USDM ROM right? I think? Lol.
Wondering if I can run a wire from pin #73 to my AEM Boost Gauge's output wire?

Pin #73 is map sensor signal for USDM Evo VIII

http://evoecu.logic.net/wiki/USDM_VIII_ECU_Pinout

EvoIIIAj

iTrader: (1)

Just noticed the USDM VIII ECU has 4 connections on the back also, vs the 3 on the back of my JDM VIII ECU.

HyperDisorder

iTrader: (1)

Don't worry that it's a USDM rom. It just matters that you have the 3 plug ECU. Pin 73 will be fine. If for some reason you end up with issues, it'll be easy enough to convert you to 96260709. It the rom I run.

EvoIIIAj

iTrader: (1)

Cool. In the near future I want to do it so I can log boost with tscompusa.

EvoIIIAj

iTrader: (1)

Hyper... You around? What's the easiest way to get me to log boost in EvoScan right now? I have an AEM digital boost gauge if that helps lol

HyperDisorder

iTrader: (1)

Hey, have you wired it up to pin 73 yet? Or 92 or 93 as they are the spare pins that are ADC's. I'm not running 9653 so then I can only suggest you log 3C for pin 73, or 38 for pin 92 or 39 for pin 93.

EvoIIIAj

iTrader: (1)

Nope, haven't wired anything up yet, just want to be sure before I start messing with the ECU like that!