will non catted front pipe effect my o2 sensors? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

teamred · 10-14-2013, 04:09 PM

I'm going to be installing my Avo cat less front pipe and Perrin over pipe in a couple days And am wondering if the cat less front pipe will cause any problems with the o2 sensors

Sportsguy83 · 10-14-2013, 04:12 PM

Quote:

Originally Posted by teamred

I'm going to be installing my Avo cat less front pipe and Perrin over pipe in a couple days And am wondering if the cat less front pipe will cause any problems with the o2 sensors

No, the O2 sensors monitor the Cat in the header and thats it. Frontpipe header is not monitored by ECU.

FR-S Matt · 10-14-2013, 04:12 PM

Quote:

Originally Posted by teamred

I'm going to be installing my Avo cat less front pipe and Perrin over pipe in a couple days And am wondering if the cat less front pipe will cause any problems with the o2 sensors

Both o2 sensors are in the header, so no. 1 precat, 1 post cat. Hence why everyone gets a CEL with a catless header without using a spacer or a proper tune.

teamred · 10-14-2013, 04:16 PM

Awesome thanks guys,I didn't have a chance to look to see where they are located as I'm out of town right now.

10-14-2013, 04:09 PM	#1
teamred Member Join Date: Mar 2013 Drives: firestorm scion frs Location: Olympia,WA Posts: 79 Thanks: 8 Thanked 23 Times in 18 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	will non catted front pipe effect my o2 sensors? I'm going to be installing my Avo cat less front pipe and Perrin over pipe in a couple days And am wondering if the cat less front pipe will cause any problems with the o2 sensors __________________ My build=2013 MT firestorm FR-S, AFE drop in filter, Mishimoto induction hose, Tein street flex coilovers, Perrin endlinks, black 17x9 Rays gram light 57dr, 255/40/17 Michelin pilot sport a/s 3, Tomei el header, Perrin overpipe, AVO catless frontpipe, Injen SES dual cat back exhaust,tuned at drift office

10-14-2013, 04:16 PM	#4
teamred Member Join Date: Mar 2013 Drives: firestorm scion frs Location: Olympia,WA Posts: 79 Thanks: 8 Thanked 23 Times in 18 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Awesome thanks guys,I didn't have a chance to look to see where they are located as I'm out of town right now. __________________ My build=2013 MT firestorm FR-S, AFE drop in filter, Mishimoto induction hose, Tein street flex coilovers, Perrin endlinks, black 17x9 Rays gram light 57dr, 255/40/17 Michelin pilot sport a/s 3, Tomei el header, Perrin overpipe, AVO catless frontpipe, Injen SES dual cat back exhaust,tuned at drift office

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