Catless DP/ Muffler Delete

AlmightyF30 · 11-05-2022, 08:41 AM

Hey Bimmers,

I currently have CEL "Check Engine Light" P0420 Bank 1 "Catalyst System Efficiency Below Threshold" is it because I have Catless Downpipe and a muffler delete???

mike@x-ph.com · 11-05-2022, 09:00 AM

Its from the downpipe, the muffler delete does not trigger the check engine light

fixmefixmyhead · 11-05-2022, 08:14 PM

You can hide this code with a tune like bm3, MHD or MG. which you should really have to take full advantage of the downpipe

11-05-2022, 08:41 AM	#1
AlmightyF30 New Member 1 Rep 11 Posts Drives: BMW 328I Join Date: May 2022 Location: Maryland iTrader: (0)	Catless DP/ Muffler Delete Hey Bimmers, I currently have CEL "Check Engine Light" P0420 Bank 1 "Catalyst System Efficiency Below Threshold" is it because I have Catless Downpipe and a muffler delete???
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11-05-2022, 09:00 AM	#2
mike@x-ph.com BimmerPost Supporting Vendor 24457 Rep 191,382 Posts Drives: 07-335/12-328/18-M4/21-M4CP Join Date: Sep 2013 Location: Las Vegas iTrader: (23)	Its from the downpipe, the muffler delete does not trigger the check engine light __________________ Check out our current sale by clicking on this link! https://x-ph.com/sale/ Phone number 702-494-9435
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11-05-2022, 08:14 PM	#3
fixmefixmyhead New Member 9 Rep 17 Posts Drives: 2019 BMW 440i X-Drive GC Join Date: Oct 2022 Location: Long Island, NY iTrader: (0)	You can hide this code with a tune like bm3, MHD or MG. which you should really have to take full advantage of the downpipe
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