[Slim415]

I have a '11 E92 335is. I put the engine back to stock, flashed the MHD stock map, and checked the option for stock downpipes. After 4 months of normal driving you would think my car would be smog ready but it's not. I've done tons of drive cycles and just got home from doing another one just now. I've been focusing on the O2 part of the cycle and I drove for 30 minutes at 58MPH with no AC and no radio on. And then I turned around and did it for 40 more minutes and still the O2 is not ready. Used the cruise control and the RPM's never went over 2K. All other sensors have been ready for months. What can I do? My registration is now expired but I payed the fees. I'm at my wits end with this drive cycle.

[Tunafish]

You checked the option for stock down pipes.. But do you stock down pipes? If not a tune not going let you pass.. It will only clear the error you see.. Error will still be there..

[Slim415]

Originally Posted by Tunafish

You checked the option for stock down pipes.. But do you stock down pipes? If not a tune not going let you pass.. It will only clear the error you see.. Error will still be there..

I had downpipes but I put the stock ones back on and then checked the box for stock DPs in MHD

[Tunafish]

Try resetting your adaptations, whatever has to to deal with the o2 sensors.. Not sure for the n54..

[Slim415]

Originally Posted by Tunafish

Try resetting your adaptations, whatever has to to deal with the o2 sensors.. Not sure for the n54..

Never heard of resetting adaptions before. I'll have to look into that. Is there a way to actually uninstall the MHD completely? Would it make a difference? I'm wondering if I should just take the car to the dealership to have it checked out.

[Tunafish]

You can reset adaption in MHD.. Where you check for error codes.. The cars always adapting but this might force the process.. You can remove MHD under stock, flash back to stock...

[Slim415]

Originally Posted by Tunafish

You can reset adaption in MHD.. Where you check for error codes.. The cars always adapting but this might force the process.. You can remove MHD under stock, flash back to stock...

Thanks

[blueberry335i]

Flash back to stock then reflash

[Slim415]

Originally Posted by blueberry335i

Flash back to stock then reflash

I reflashed the stock map 2x so far