Catless 335is (N54) Emissions

wtfamidoing · 08-31-2024, 01:16 PM

Hello all. I’m trying to pass emissions with a 335is with catless VSRF DPs. I run stage 2+ on MHD and it currently shows O2 incomplete and Catalyst incomplete.

As far as i know i only need to get it down to 1 incomplete to pass in Connecticut. What alternative do I have to reinstalling the stock cats?

I flashed it Stage 0 and still have aftermarket DPs selected in MHD, gonna try the driving cycle and see if that gets it off incomplete.

Other than that I’ve seen the DP fix modules that i attach to the DME, any tips on that? If i go that route should I remove it after passing? Should i select stock cats in MHD Stage 0 as well?

Sgop335 · 08-31-2024, 01:41 PM

https://www.e90post.com/forums/showthread.php?t=2128780

08-31-2024, 01:16 PM	#1
wtfamidoing Registered 0 Rep 3 Posts Drives: BMW 335is Join Date: Mar 2024 Location: New England iTrader: (0)	Catless 335is (N54) Emissions Hello all. I’m trying to pass emissions with a 335is with catless VSRF DPs. I run stage 2+ on MHD and it currently shows O2 incomplete and Catalyst incomplete. As far as i know i only need to get it down to 1 incomplete to pass in Connecticut. What alternative do I have to reinstalling the stock cats? I flashed it Stage 0 and still have aftermarket DPs selected in MHD, gonna try the driving cycle and see if that gets it off incomplete. Other than that I’ve seen the DP fix modules that i attach to the DME, any tips on that? If i go that route should I remove it after passing? Should i select stock cats in MHD Stage 0 as well?
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08-31-2024, 01:41 PM	#2
Sgop335 Colonel 669 Rep 2,076 Posts Drives: 07 335i e92, 08 535i Join Date: Jun 2014 Location: MD iTrader: (1)	https://www.e90post.com/forums/showthread.php?t=2128780 __________________ 335i e92 TPC 19Ts
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