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(Resolved)??? 1g to 2g MAS adapter using 89T harness
http://www.4g61t.org/forum/viewtopic.php?f=6&t=37900		 Page 1 of 1
Author:  joemoto [ Sat Jun 29, 2013 6:07 pm ]
Post subject:  (Resolved)??? 1g to 2g MAS adapter using 89T harness
Is the 89-turbo MAS wiring the same as the 1g MAS?
I have it hooked up per the FAQ:
PINS
2g to 1g
1 ---- 4
2 ---- 7
3 ---- 2
4 ---- 3
5 ---- 6
6 ---- 8
7 ---- 1
I started it and I am logging:
Air flow 0Hz
Barometer 0.0bar
Air Temp -74/ now correct at +72*

I'm using an 89T harness with 1g ECU with pins 6 & 14 switched.
I can't be sure about the 2g MAS being good but I wanted to verify the pins are properly wired
Author:  89Mirageman [ Sat Jun 29, 2013 6:17 pm ]
Post subject:  Re: ??? 1g to 2g MAS adapter using 89T harness
The 90 4G63T engine is a direct drop in so I'm sure the wiring is the same.
Author:  joemoto [ Sat Jun 29, 2013 6:59 pm ]
Post subject:  Re: ??? 1g to 2g MAS adapter using 89T harness
I thought the 89 turbo and 90 turbo wiring was the same and what you say would confirm that. I need to verify whether or not the typical 1g to 2g MAS adapters circa 91-94 are pinned differently than the 89-90 MAS?

While looking at the wiring diagram for the 89T and comparing it to a 91T per my Galant manual I see that 12volts from the MPI is supplied to the 89T at pin 3 and the 91T is supplied at pin 2. I wanted to see if anyone has noticed this and what was done.
thanks-
Author:  joemoto [ Sat Jul 06, 2013 5:43 pm ]
Post subject:  Re: (RESOLVED) 1g to 2g MAS adapter using 89T harness
Well I found the problem with my Airflow and Barometric measurements. It was my fault; when I rewired the connector I reversed the top row consisting of 1 through 4.
I have idle surge with the idle switch connected, but at least the values are there.
Author:  stealthpony [ Sun Jul 07, 2013 1:53 pm ]
Post subject:  Re: (Resolved)??? 1g to 2g MAS adapter using 89T harness
I was pleased to see this post. I have been wondering if I didn't do something wrong with my rewire. I planned to check it out today and now I most certainly will. Glad it worked out in your favor.
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