Ok, so my brother lives about 2 hours away from me and i do most of his installs on parts and definitely all of his tuning on his car. He has been running e85 for a while and we both have a check engine light code which on my car is P0140 and no matter what i do i can't get rid of it, regardless that's besides the point. My brother was using DW 1000s but he wanted to upgrade to the 1300s since he was static at higher RPMs. he brought me the car and the car had a SES light and i didn't bother to check it because i though it would be the p0140 due to no cat and e85. so i swapped injectors and have them running good now, but when i started to retune his car i noticed that his actual mivec varied drastically from his target mivec on both exhaust and intake. i know that the equations aren't bad on evoscan because mine work fine. that's when i realized that there is something wrong here. the i used VDR to verify my suspicion and what i found was shocking. His peak power and torque where the same, almost identical to before, but his under the curve dropped by as much as 30 whp and wtq! no i know this isn't because of the setting of VDR so please don't start that conversation, i know VDR works for the purposes i use it for.

So, his intake target map is at around 30 during spool but his actual is at around 9, and his exhaust target is around -20 in the same area but his actual is at like 4 so there is something going on. i pulled the code and it's a P1025 which the definition is Exhaust engine oil control valve circuit. so I did a search and couldn't find anything beside gunzo mentioning it once. We've narrowed it down to it having something to do with his exhaust mivec, obviously, but we can't figure out if a solenoid stopped working, or if the sensor isn't working. he has a full race manifold that doesn't have a heat shield but he did put anti heat tape on all exposed sensors, cables, etc but we don't know what's going on. any thoughts?

 

From the FSM:

The exhaust engine oil control valve change the phase angle to operate the MIVEC system in the advance or retard side in accordance with the signals from the ECM.

TROUBLESHOOTING HINTS (The most likely causes for this code to be set are
•Exhaust engine oil control valve failed.
•Open or shorted exhaust engine oil control valve circuit, or harness damage, or connector damage.
•ECM failed.

I can give you instructions on how to test the valve if you want... narrow it down a bit

 

Thanks tephra, i actually went to my local mitsu dealer because i know the owner and he let me use his MEDIC so i saw that. how did you get it though? i'd love to have an electronic FSM available. anyways, thread can be closed. problem fixed. I can't reveal the source of the issue because i love my brother too much to make fun of him publicly.

 

the FSM is fairly easy to find online...

 

Unplugged I'm guessing?

 

i wish it would have been that easy.

got a link tephra ?

 

They will close and lock the thread if that is posted.

Here.... http://tinyurl.com/3y9hcld

Feel free to remove the site specification and show all of the other links that come up.