Flash tuning results on a stock 99 VR4

[Greg E]

Have the fuel solenoid map, egr solenoid map, charcoal canister solenoid map been found?

I found the egr map but not the others. I probably won't spend any time looking for them. As you know we figured out how to disable them in the periphery so the only thing that's left to figure out is how to set the OBD2 tests to ready & pass.

[Jesters Deadd]

I found the egr map but not the others. I probably won't spend any time looking for them. As you know we figured out how to disable them in the periphery so the only thing that's left to figure out is how to set the OBD2 tests to ready & pass.

If those other maps are found and the OBD2 tests can be set to ready & pass, couldn't we use the other unused solenoids then as other outputs? like shift lights, mivec, alcohol/water inj, whatever...

[Jesters Deadd]

Sucker!

Mitsubishi liked to recycle code for some reason. In the OBD1 days, there were separate maps for fed and california ecus. So you have a high and low octane map for each emission ecu. I have to double check the code again but I think there maybe 6 or 8 maps total. Gate or Brett could probably back me up on this.

Anyway, hardware wise the California and fed spec ecus have their differences but they all shared the same (almost) code. The only difference in the code was which set of tables that ecu used.

When OBD2 became standard and every car shared the same ecu, they never got rid of those extra tables in the code for some reason. Even the EVOs have 3 high and 3 low octane fuel maps even though only one is used.

I wonder if some of those extra peripheries are for switching between fuel maps, That would be neat!

[BlackStealth]

Long time ago when I had an AEM EMS, I thought it would be cool to use the stock boost solenoid instead of the GM boost solenoid for a more sleeper look. I didn't use the factory boost solenoid as a bleeder configuration, I used the solenoid in the same way the GM boost solenoid was used, that is to restrict boost going into the wastegate. To my disappointment, I think 14psi was the maximum I could get, and I really wanted 17psi. In the end I ditched the stock boost solenoid in favor of the GM boost solenoid and problem was solved. I don't recall if I tried removing the "restrictor" inside the solenoid as mine was a 1st gen solenoid.

[Greg E]

If those other maps are found and the OBD2 tests can be set to ready & pass, couldn't we use the other unused solenoids then as other outputs? like shift lights, mivec, alcohol/water inj, whatever...

I was thinking of using them for BIG maps.

[Greg E]

Long time ago when I had an AEM EMS, I thought it would be cool to use the stock boost solenoid instead of the GM boost solenoid for a more sleeper look. I didn't use the factory boost solenoid as a bleeder configuration, I used the solenoid in the same way the GM boost solenoid was used, that is to restrict boost going into the wastegate. To my disappointment, I think 14psi was the maximum I could get, and I really wanted 17psi. In the end I ditched the stock boost solenoid in favor of the GM boost solenoid and problem was solved. I don't recall if I tried removing the "restrictor" inside the solenoid as mine was a 1st gen solenoid.

It doesn't seem to flow enough air for a feed vs a bleeder. I'll play with it some more on the new setup with the forge wastegates.

[BlackStealth]

It doesn't seem to flow enough air for a feed vs a bleeder. I'll play with it some more on the new setup with the forge wastegates.

In order to raise boost, the wastegate actuator needs airflow to be restricted even further, so wouldn't that be opposite problem? The stock solenoid couldn't restrict the airflow enough.

[Greg E]

In order to raise boost, the wastegate actuator needs airflow to be restricted even further, so wouldn't that be opposite problem? The stock solenoid couldn't restrict the airflow enough.

The stock solenoid doesn't block airflow, it bleeds air away from the wastegates. A larger opening is needed to bleed away more air.

Semantics....

I don't anticipate the stock solenoid is going to bleed away enough air to make any real boost with 15psi actuators. Even with the restrictor pill removed. Still going to try it anyway though just because its never been done. Worst case I'll only see 15psi at 100% duty cycle.