[cesararzola]

2008 335xi
Arm 5 in
DCI
Catless dp
Stage 1 MHD 93oct
162,000 miles


Kinda new into the tuning world haha so need some help from someone that really knows about logs


Recently went catless and tuned the car with MHD and am still getting catalytic codes

2c7c
2c7b

Thought MHD fixed this with the dp fix in the settings so why is it showing up


My next thought is are my 02 sensors after the cat needing to be replaced maybe fill of gunk from the exhaust ?





Here are my logs 3rd gear pull and let off



3rd gear pull let off




And here’s at idle

idle

[roadkillrob]

I had something similar just happen, first assuming you picked Aftermarket DP's in the pulldown and not OEM catted DP's.

I had flashed back to stop (long write) for emissions check and then flashed back to stage 2+ no change of settings and it was aftermarket DP's selected and a couple drives later I get a check engine and cat efficiency codes, I double checked and aftermarket DP's were selected so I should not have gotten the codes. I reflashed again and so far so good, need a couple more drives, but there is some weird bug I experienced and you seem to be experiencing the same.

[roadkillrob]

Hey just an update on this, they never came back after I flashed again I just toggled the setting to OEM and back to aftermarket and have drive a few hundred miles and they never came back, seems like an bug in MHD.

[cesararzola]

So toggle it to oem cats and flash then toggle back to after market dp and flash again ?

[cesararzola]

So just curious


So CUREENTLY RUNNING stage 2+ on AFTERMARKET DP in settings and to clear those code do



1. So go into stage 2+ then in exhaust setting set it to OEM CATS,then FLASH IT


Then


2. Go back into stage 2+ and set exhaust settings back to AFTERMARKET DP,FLASH IT again


And it should work ?


Kinda new to this haha

[roadkillrob]

Originally Posted by cesararzola

So toggle it to oem cats and flash then toggle back to after market dp and flash again ?

I didn't even flash in between, just connected and changed the setting to OEM then changed back to aftermarket/catless then flashed again and all seems fine now. Won't hurt flashing in between, but it does seem there was some bug with mine where it flashed it to OEM cats even though it wasn't selected as that so just changing it and re-flashing made the setting stick.