log boost with JDM MAP sensor (updated instructions)
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EvoM Guru
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From: Tri-Cities, WA // Portland, OR
From the service manual it looks like the MDP is only for the EGR check. I did not see it used in the emissions system for control anywhere. The MDP is only referenced for EGR relation codes in the manual.
Thread Starter
EvoM Guru
iTrader: (50)
Joined: Mar 2006
Posts: 9,675
Likes: 132
From: Tri-Cities, WA // Portland, OR
I've been working on finding the table to fix this. I've spent many evenings pouring through assembly code, but haven't found it yet. Its much more elusive than the other tables which were quite easy to find after I learned a bit about assembly code. Give me another week or so, and I'm hoping to have a solution.
No issues with my IX yet!
For those getting the P0401 CEL.... what is your AFR at WOT? Do you mind sharing the fuel tables?
Also, did you check for any vaccum leaks on the intake manifold? I did secure mine with tie wraps to be sure and did a boost leak test.
For those getting the P0401 CEL.... what is your AFR at WOT? Do you mind sharing the fuel tables?
Also, did you check for any vaccum leaks on the intake manifold? I did secure mine with tie wraps to be sure and did a boost leak test.
No leaks but that has nothing to do with it. Its when the egr performance check happens.
And my AFRs are 11.2-11.4 when wot
Last edited by kreionic; Jun 12, 2007 at 01:48 PM.
Yes thats the same cel as the code # when the egr vacum line popped off. The jdm sensor egr cel and when the egr line popes off are both p0401 Thats not the issues with the jdm sensor. You get the code when the egr does its check and certain criteria is meet
