Hey everyone
Looking for a definitive answer as I've been discussing the topic of headers and the CEL on the FL2 with another member and have found some conflicting/ uncertain information regarding being able to swap in an ECU from an 05/06 model Tib into an FL2.
It was brought to my attention that Ontario will be implementing a new law that if a vehicle passes a conditional emissions test the next subsequent test must result in a full pass opposed to another conditional. This poses a problem for me as I currently just get a conditional pass (for free through connections) every time emissions testing comes around.
Link the the law is here: https://www.ontario.ca/page/drive-clean-test-results-and-repairs#section-2
I already have a cat installed and an O2 placed in behind the cat and am looking for a definitive answer as to whether I can transplant a stock ECU from an 05/06 V6 tib into my 08 GT? I've discussed it with my mechanic before but we were unsure if the pins in the back and wire connections were different between the years or if they are identical?
I have found some info on compatibility between the years of ECUs. In short, according to a thread I found (see below) the 05/06 ECUs will work in the 08, but it might not solve the emissions testing issue. See below for details:
I was digging around on the NT archives and I found this thread. If I understand correctly, the OP (Mr.Tibbs) had a 08 with I/H/E that had a 05/06 ECU and relocated O2 sensors in it (most likely an attempt to circumvent the CEL resulting from having no pre-cats). He said the the CEL came on intermittently and that he was unable to pass inspection in New Jersey due to sensors showing as "Unsupported", and that sometimes when the CEL came on, no codes showed on OBDII scans. Mr. Tibbs also mentions when he switched the ECU in the car from the 05/06 to an 08 ECU and went for a re-test, the sensors still showed as "unsupported". Maybe there was just an issue with his O2 sensors, and the 05/06 ECU will work for emissions?
Perhaps Mr. Tibbs could provide some insights as he was also trying to pass emissions testing on a 2008 with I/H/E mods.
When I clear it it goes away just like a regular code getting erased. It comes back usually on the first start whenever the car isn't driven regularly. Ironically it decided to show up again this morning and I cleared it again, but...
I still failed inspection today because only one of the OBDII monitors was "ready" (comprehensive). The others were deemed "UNSUPPORTED" in their report. Not sure a car can run without those other monitors, but whatever. Aren't they supposed to be just "not-ready" if they haven't run yet?
The prev. owner said they never had inspection issues (in NJ of all places), but I think they're full of it. They must have had it done in 2013 before the new ECU was put in. I checked the Hyundai part numbers on the "tuned" ECU I have now and the original they sold me with the car and they're different:
New "tuned" has:
5WY1842B and 39109-37605, 39109-37600, N75G (2/24/05)
And the original has
5WY1F28B and 39109-37647, 39109-37642, N78G (5/20/08 )
The only difference I can find online is that the tuned one was probably from an '05-06 model and the original is actually from an '07-08, (date matches my production). Shouldn't both be OBDII? Internals are likely the same, but maybe the monitors were disabled for the tune?
The other issue you may run into is if the E Tester does a VIN check. You'll fail on that unless you some how get the 05/06 ECU flashed with the correct 08 VIN.
I don't think this will be a issue here in Ontario, I read they do not enforce matching VINs , I found this on a thread on a Suburu forum:
"You gotta get a computer tuned to match the vin to the vehicle... or you auto-fail because of that, doesnt matter if the car runs great, its now a matter if it detects a miss in any computer data"
this is false. vin on ecu does not have to match vin on car. we already passed one car who replaced his ecu with a junkyard ecu.
I found an old e-test for my car before I owned it on the Driveclean website. As you can see below, there are a few inspection categories outlined in red that show as "N/A". Mr. Tibbs said he failed because some sensors showed as unsupported. My car passed despite the N/A categories, so maybe in Ontario (if "N/A" and "Unsupported" mean the same thing) the car can pass, but in Mr. Tibbs Jurisdiction he cannot pass with "N/A or "Unsupported" sensors?
I found an old e-test for my car before I owned it on the Driveclean website. As you can see below, there are a few inspection categories outlined in red that show as "N/A". Mr. Tibbs said he failed because some sensors showed as unsupported. My car passed despite the N/A categories, so maybe in Ontario (if "N/A" and "Unsupported" mean the same thing) the car can pass, but in Mr. Tibbs Jurisdiction he cannot pass with "N/A or "Unsupported" sensors?
To me, "unsupported" and "N/A" mean the same thing, likely to inspection as well.
In MrTibbs case, likely the inspection database has a list of items/monitors to expect from his VIN. If he is missing one or more, he fails inspection even if what does show is "ready" and no CEL's.
Chris, as @dmdicks said, yes the ECUs for 05/06 and 07/08 are plug and play, same connectors and everything, as long as they are for the same V6 engine/trans. Canadian ones may be different depending on if your car had an immobilizer or not. I heard you cannot swap from an "immobilizer" car to one that isn't and vice versa. There is additional fail-safe programming in those that won't allow the car to run if things don't match up.
To me, "unsupported" and "N/A" mean the same thing, likely to inspection as well.
In MrTibbs case, likely the inspection database has a list of items/monitors to expect from his VIN. If he is missing one or more, he fails inspection even if what does show is "ready" and no CEL's.
Charlie I think you are right, at least about the database. Basically in NJ they check the VIN against the factory emission control spec. As most probably know 2008 was a bad year for "tuning"... the noose tightened when the manufacturers started implementing the next-gen CAN-OBD system (starting in '07). In NJ also you cannot pass if more than one monitor is "Not Ready". They do give an allowance for just one I believe. You aren't dinged for "N/A" monitors as the car never came with them from the factory.
As for the N/A versus unsupported, not sure. Both the stock '08 and the older untuned ECU seemed to work perfectly fine in my car regardless on how the monitors showed up. Still don't know why there was a distinction. I'll have to dig up my failed report and post it so you guys can see what I mean.
Thanks everyone for posting. Just to clarify I'm actually not all that worried about any legislation surrounding switching the ECU with VINs and what not since it is not a fail for having non matching VINs on the ECU and the car.
Still looking for some definitive answers regarding fitment. Essentially. if I got rip an ECU from an 05 GT is it a drop in and drive type swap (just to be simplistic, not diminish the work to do it). Essentially, will it fit with the existing wiring harness in my 08 GT and run it just the same (aside from the environmental sensitivities being different).
Thanks much everyone
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