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Is there a viable option for updating OBD-I to OBD-II in order to increase possibility of engine tuning?

I think it's a very laudable enterprise. I also think your "fish" isn't gonna last long. Your best bet is to convert to an aftermarket injection and ignition system (Haltech comes to mind; but there ...
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2 votes
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90 Subaru Legacy - Pull Codes

The connectors you're looking for should be under the dash on the driver's side of the car. This is the area you've opened up already. I don't think the lone green connector you can see in the "B" ...
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2 votes

Is there a viable option for updating OBD-I to OBD-II in order to increase possibility of engine tuning?

As explained in other answers, the short of it is, no it is not easily feasible. For your purpose, a tunable after-market ECU would be necessary. You may be interested in an open-source ECU, that you ...
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1 vote

Do these 02 Sensor readings from obd1 look correct?

That’s a pre-cat O2 sensor exhaust leak sucking in air during valve overlap.
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1 vote

Do these 02 Sensor readings from obd1 look correct?

It's very hard to tell if the sensor figures are correct. O2 sensors become 'lazy' over time, with slower responses to changes in oxygen levels, this could explain the lagginess of the readings. O2 ...
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1 vote

1995 VW Eurovan OBD I to OBD II adapter

Usually on OBD 1 cars you can jump a pin and read the codes via a blinking light of some sort, refer to your van manual to find what pins to jump(with a paper clip) and then depending on the blinks ...
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1 vote

Is there a viable option for updating OBD-I to OBD-II in order to increase possibility of engine tuning?

In short the answer is no. You best bet will be to get an aftermarket computer fuel injection system and put on the vehicle. If you can be more specific about what you want to tune exactly I may be ...
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1 vote

10/89 (1990) Subaru Legacy EJ22 - OBDI Code 45

The atmospheric pressure sensor is located in the ECU per Mitchell. This is fairly common across makes. Try clearing the codes and if the code comes back replace the ECU.
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1 vote

90 Subaru Legacy - Pull Codes

In picture A, the Yellow connector is the SubaruSelect Monitor 1 connector - unless you're at a dealership, you won't have that tool, so you can ignore this connector. In picture B, the green ...
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1 vote
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Live scan tool for OBD 1.5 GM transitional?

I have an Actron CP9145 that reads obd 1.5 on my 1995 GMC Jimmy. does not read ABS or Airbag though. Bought it new for $135 a couple of years ago. Don't remember if I got it on Ebay or Amazon. I know ...
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Live scan tool for OBD 1.5 GM transitional?

I have a 95 Chev Astro 4.3 Vortec V6 with the transitionary OBD1.5 connector and I use a Craftsman Scantool CanOBD2&1 Kit, part number 920899 (about $300+ US back around the turn of the century [...
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1 vote
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95 Honda civic ex, OBD port not giving check engine light codes

When the Malfunction Indicator Lamp (MIL) has been reported on, do the following: Connect the SCS Service Connector to Service Check Connector as shown. (The 2P Service Check Connector is located ...
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