[romeo519]

Running Cobb stage 2 sport with a DP Fix would it cause any problems ? I kept the DP fix installed for BMW services.

[Wedge1967]

You can disable the 29F4 and 29F5 codes in ATR if they aren't already disabled. So no need to keep it installed if it's not throwing a cell.

[2Times]

The guy who made that DP fix says to take it off if not needed, it could cause you to run lean. I'd take T's word on it over anyone else. I mean... BEST case is that it does nothing.

[romeo519]

Perfect Good to know Thank you!

[Snypa]

Agreed^^

I;m running similar setup without DP fix. No issues.

[romeo519]

My problem is I installed the DP fix so that I could take the car in for service at the BMW dealer, the car is still under warranty.. I couldn't keep the Cobb installed when taking it in. So I decided to install the DP fix so that the car doesn't throw any codes on my way to the dealer. That's what I was worried about.

[Snypa]

I hear people put back stock downpipes when bringing in car for service (if you are under warranty and wish to kkeep it). Others have categorized their dealer as being 'mod-friendly' and still take it in with all mods on it. In your case, if you uninstall cobb and still have downpipes, you will get a CEL.

[2Times]

I'd uninstall the DPs if you're worried about warranty, if that's to much of a hassle, just install the DP fix when you take it in for service. The techs can tell that you have DPs pretty easily.