Putting back stock cat after catless

kyrix1st · 11-25-2018, 06:23 AM

Are there anything to watch out putting back stock cats after going catless for a while? My MOT is coming up soon and I need to revert back to stock.

I will take it easy for some miles with stock cat on for the DME to learn new readings..

Also canceled out o2 warnings via programming but I wonder if this will affect it.

Any ideas?

wfdeacon88 · 11-25-2018, 07:21 AM

is it like getting an inspection for window tint? where an Indy shop assumes you "got the delete the day after the inspection"...

M3ANMACHINE · 11-25-2018, 01:50 PM

Just put the stock x Pipe back in and reprogram the Ecu to stock. Drive it for a few days so all sensors are ready.

11-25-2018, 06:23 AM	#1
kyrix1st Colonel 2432 Rep 2,441 Posts Drives: '25 718 GTS 4.0; E92M3 MT&DCT Join Date: Sep 2014 Location: nyc iTrader: (0) Garage List 2004 BMW Z4 [0.00]	Putting back stock cat after catless Are there anything to watch out putting back stock cats after going catless for a while? My MOT is coming up soon and I need to revert back to stock. I will take it easy for some miles with stock cat on for the DME to learn new readings.. Also canceled out o2 warnings via programming but I wonder if this will affect it. Any ideas? __________________ Pass me if you can.
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11-25-2018, 07:21 AM	#2
wfdeacon88 Major 1123 Rep 1,390 Posts Drives: E90 M3 Join Date: Sep 2018 Location: Triad, NC iTrader: (0)	is it like getting an inspection for window tint? where an Indy shop assumes you "got the delete the day after the inspection"...
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11-25-2018, 01:50 PM	#3
M3ANMACHINE Admiral 987 Rep 3,908 Posts Drives: 2022 G07 X7 Join Date: Jan 2010 Location: Irvine, CA iTrader: (11)	Just put the stock x Pipe back in and reprogram the Ecu to stock. Drive it for a few days so all sensors are ready. __________________ 2020 FORD RAPTOR 2022 G07 X7 \| M-SPORT SOLD 2011 SG E90 M3 \| 2014 F15 X5\| 2008 AW E90 M3 \| 2004 E46 M3
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