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Registered
2006 Forester XT
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5 Posts
Discussion Starter · #1 ·
Hi all!
Yesterday I was finally able to read my ecu by selecting 2007+ from the list. Previously was hitting my head into sti05 and it always failed.

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Well anyways, I found out that in the ecu in diagnostics codes the CAT EFFICIENCY BELOW THRESHOLD was disabled, with numerous secondary air pump and rear o2 sensor codes as well. I presume that my ecu has been tampered before? The car is bone stock otherwise.

I have a hunch that I will get some codes if I turn those disabled codes into enabled :coffee: At least the cat is probably shot, since it needs a real heavy pedal to make it through emissions check.
 

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Registered
2006 Forester XT
Joined
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5 Posts
Discussion Starter · #2 ·
After some more snooping around the ecu ROM it is definitely not a original FXT map. It has minor tune up and these disabled codes. I wonder why the rear O2 sensor codes have been disabled? I believe 32 bit ecu has use for rear O2 signal. I will enable the disabled codes and let's see if any of them pop up.
 
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