Using HP Tuners to tune out Codes
Using HP Tuners to tune out Codes Ok it's emissions time and i need to take my car to DEQ. My tuner tried once to delete the codes using HP tuners but obviously it wasn't right. Could anyone give me a step by step way of Tuning out the AIR, EGR, and Rear o2 sensors using HP Tuners so i can pass emissions?! THanx
TECH Senior Member
Joined: Nov 2001
Posts: 7,036
Likes: 1
From: Lake Zurich, IL
go to the Engine DTCs
Find the ones related to the sensors you don't have (EGR, AIR, and Bank 1 and 2 sensor 2)
Set it to "Does not report error"
and that's it...
did this on my car a month ago and passed emissions flying colors
Find the ones related to the sensors you don't have (EGR, AIR, and Bank 1 and 2 sensor 2)
Set it to "Does not report error"
and that's it...
did this on my car a month ago and passed emissions flying colors
TECH Senior Member
Joined: Nov 2001
Posts: 7,036
Likes: 1
From: Lake Zurich, IL
Originally Posted by Chevy4Life
and horist ur sure it wont give me a bunch of unready's? Will they eventually become ready?
I disabled all the codes as stated above. Got 3-4 cold starts, 3-4 hot starts and 30 miles driving and all but 1 readiness test passed.
You may want to post up in the local section to see if anyone near you has a scanner that can read readiness tests... also if it's someone w/HP Tuners for your car, if you can get them to read the PCM and verify the changes (or send me the .bin and I can go over it)
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Originally Posted by horist
go to the Engine DTCs
Find the ones related to the sensors you don't have (EGR, AIR, and Bank 1 and 2 sensor 2)
Set it to "Does not report error"
and that's it...
did this on my car a month ago and passed emissions flying colors
Find the ones related to the sensors you don't have (EGR, AIR, and Bank 1 and 2 sensor 2)
Set it to "Does not report error"
and that's it...
did this on my car a month ago and passed emissions flying colors
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Joined: Feb 2004
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Originally Posted by MUSTANGEATER
Werd I agree, make sure you keep the Ses enabled to on. I know I've seen them get a readiness failure in IL (not sure if it's directly related to that though) I'm going to have to go through my entire file and set all the codes correctly
TECH Senior Member
Joined: Nov 2001
Posts: 7,036
Likes: 1
From: Lake Zurich, IL
Originally Posted by Another_User
I set my SES enabled to off and the HPTuners checks check out. Will that be the same as they see during a smog check?
yup... so long as the scanner says the readiness tests are completed... that's what the emissions peops will see....
I've heard a few times in the past that you could set the codes to off and it'd still pass... but my first time doing it I just set them to does not set code and it worked so never tried w/setting the codes to off
When the OBD3 PCM's are introduced, I was told we would no longer be able to turn off codes. The EPA wants the software to report bypassed codes to report as failures.
Good reason to keep older cars.
Good reason to keep older cars.
Originally Posted by horist
yup... so long as the scanner says the readiness tests are completed... that's what the emissions peops will see....
I've heard a few times in the past that you could set the codes to off and it'd still pass... but my first time doing it I just set them to does not set code and it worked so never tried w/setting the codes to off
I've heard a few times in the past that you could set the codes to off and it'd still pass... but my first time doing it I just set them to does not set code and it worked so never tried w/setting the codes to off
Floyd.
TECH Senior Member
Joined: Nov 2001
Posts: 7,036
Likes: 1
From: Lake Zurich, IL
Originally Posted by MUSTANGEATER
Are you guys just using the normal DTC scan to check for the codes? or is there another way to check all the readiness systems?
Floyd.
Floyd.
Originally Posted by horist
yup, in HPT it's just the DTC scan... at the bottom it shows which tests are complete and which are incomplete
Originally Posted by Gordy M
When the OBD3 PCM's are introduced, I was told we would no longer be able to turn off codes. The EPA wants the software to report bypassed codes to report as failures.
Good reason to keep older cars.
Good reason to keep older cars.
