P0018 P0019 P0021 after OFT tune back to stock - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

TheLemperor · 02-07-2023, 11:21 PM

My car was on a stage 2 e85 tune and got rodknock. After getting the engine rebuilt at a shop and driving it until empty, I switched the tune back to the car's original tune to get it smogged. There were no check engine lights with the e85 tune, but now it has P0018 and P0019. P0021 also showed up before but after clearing it, it's not there right now. Any help is appreciated

AussieBRZ · 02-08-2023, 05:47 AM

The OFT tunes use a euro rom as a base

When you tune back to stock you go back to the USA based rom and they seem more sensitive to those cam codes

Also you might be going back to an older base rom again more sensitive to those codes

Not sure if can pass smog on a oft stage 1 petrol tune might help

TheLemperor · 02-08-2023, 11:26 PM

Quote:

Originally Posted by AussieBRZ

The OFT tunes use a euro rom as a base

When you tune back to stock you go back to the USA based rom and they seem more sensitive to those cam codes

Also you might be going back to an older base rom again more sensitive to those codes

Not sure if can pass smog on a oft stage 1 petrol tune might help

Thanks for letting me know

TheLemperor · 02-08-2023, 11:30 PM

Do you think I can pass smog using a euro oem tune?

tomm.brz · 02-09-2023, 04:27 AM

difficult to say, you need someone Expert in how the smog check works in California, i think they also Connect to obd and check for "things" our euro cars with euro calibration don t necessarily count for

in italy they only check exhaust gas with their sensor, so i regularly tune people also with aftermarket without cat Headers, and the stock oem front pipe installed and they pass it if they show up there with a warmed up car
but California is rinomated for stringent controls

AussieBRZ · 02-09-2023, 06:32 AM

Quote:

Originally Posted by TheLemperor

Do you think I can pass smog using a euro oem tune?

As Tom said hard to say if you can pass on a euro tune

If you're in California no chance as they check the ECU claid and the checksum verification number so you need stock tune car was supplied with

Other states might be possible depends on strictness of tests

02-07-2023, 11:21 PM	#1
TheLemperor Junior Member Join Date: Oct 2022 Drives: 2013 FR-S Location: San Francisco Posts: 5 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	P0018 P0019 P0021 after OFT tune back to stock My car was on a stage 2 e85 tune and got rodknock. After getting the engine rebuilt at a shop and driving it until empty, I switched the tune back to the car's original tune to get it smogged. There were no check engine lights with the e85 tune, but now it has P0018 and P0019. P0021 also showed up before but after clearing it, it's not there right now. Any help is appreciated

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02-08-2023, 05:47 AM	#2
AussieBRZ Senior Member Join Date: Aug 2022 Drives: WRB BRZ Location: Australia Posts: 118 Thanks: 14 Thanked 52 Times in 37 Posts Mentioned: 11 Post(s) Tagged: 0 Thread(s)	The OFT tunes use a euro rom as a base When you tune back to stock you go back to the USA based rom and they seem more sensitive to those cam codes Also you might be going back to an older base rom again more sensitive to those codes Not sure if can pass smog on a oft stage 1 petrol tune might help

02-08-2023, 11:30 PM	#4
TheLemperor Junior Member Join Date: Oct 2022 Drives: 2013 FR-S Location: San Francisco Posts: 5 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Do you think I can pass smog using a euro oem tune?

02-09-2023, 04:27 AM	#5
tomm.brz Senior Member Join Date: Jan 2017 Drives: brz 2017 hksv2 Location: italy Posts: 2,280 Thanks: 515 Thanked 1,121 Times in 811 Posts Mentioned: 70 Post(s) Tagged: 0 Thread(s)	difficult to say, you need someone Expert in how the smog check works in California, i think they also Connect to obd and check for "things" our euro cars with euro calibration don t necessarily count for in italy they only check exhaust gas with their sensor, so i regularly tune people also with aftermarket without cat Headers, and the stock oem front pipe installed and they pass it if they show up there with a warmed up car but California is rinomated for stringent controls

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