Trifecta and Emissions?
05-01-2015, 12:54 AM
#30
Senior Member
Thread Starter
Final update as promised:
My car is now roadworthy, and I didn't have to tamper with the emissions system.
For starters, I reverted back to the stock tune from Trifecta. Also, I removed the catted ZZP downpipe and bolted the OEM downpipe back on. When I yanked the old O2 sensor from the ZZP dp, it was swimming in a pool of unburned fuel in the extended O2 bung (probably due to the Trifecta tune running rich). There was no doubt the O2S was dead so it was replaced with a NGK unit.
Most monitors were relatively straightforward to get ready. EVAP took an extremely long time, but it set... eventually.
I have an AEM CAI so now I am back on the Trifecta tune to avoid screwing up my LTFT.
My car is now roadworthy, and I didn't have to tamper with the emissions system.
For starters, I reverted back to the stock tune from Trifecta. Also, I removed the catted ZZP downpipe and bolted the OEM downpipe back on. When I yanked the old O2 sensor from the ZZP dp, it was swimming in a pool of unburned fuel in the extended O2 bung (probably due to the Trifecta tune running rich). There was no doubt the O2S was dead so it was replaced with a NGK unit.
Most monitors were relatively straightforward to get ready. EVAP took an extremely long time, but it set... eventually.
I have an AEM CAI so now I am back on the Trifecta tune to avoid screwing up my LTFT.
Last edited by LTBALTBMX; 05-02-2015 at 10:27 PM.
05-01-2015, 01:51 PM
#31
This changed somewhere in the last couple years;
Now the tune is done with EVERYTHING enabled, and the end user (owner or dealer) who is flashing the car has to manually disable the SES codes.
I do believe that for emissions, if you have a catted pipe, you should be fine - and as long as you don't have any SES codes making the dash illuminate you should be ok ~ so reinstalling your trifecta tune (if you can do that), with the secondary O2 code disabled might be exactly what the doctor ordered...
05-13-2015, 06:22 PM
#33
It used to be that when the tunes were ordered the ses codes were requested to be disabled;
This changed somewhere in the last couple years;
Now the tune is done with EVERYTHING enabled, and the end user (owner or dealer) who is flashing the car has to manually disable the SES codes.
I do believe that for emissions, if you have a catted pipe, you should be fine - and as long as you don't have any SES codes making the dash illuminate you should be ok ~ so reinstalling your trifecta tune (if you can do that), with the secondary O2 code disabled might be exactly what the doctor ordered...
This changed somewhere in the last couple years;
Now the tune is done with EVERYTHING enabled, and the end user (owner or dealer) who is flashing the car has to manually disable the SES codes.
I do believe that for emissions, if you have a catted pipe, you should be fine - and as long as you don't have any SES codes making the dash illuminate you should be ok ~ so reinstalling your trifecta tune (if you can do that), with the secondary O2 code disabled might be exactly what the doctor ordered...
To the OP, as for the "stock" tune, you should have the "select-a-tune" in your car. Being as you had the stock downpipe, just pop the stock downpipe in to pass the visual inspection and pass emmision test too on the stock tune.
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