Do TSP Headers need rear O2 extensions?

gomerboat · 12-26-2018, 04:54 PM

Hey guys,

I am installing 1 7/8" TSP headers+x-pipe on my 2017 1LE and have used the 1 included O2 extension on the driver's front O2 sensor. My driver's rear O2 sensor (both connection ends are gray) are about 10" apart. Is a rear driver side O2 extention needed or am I missing something? I see no way to pull down the car side of the plug because it is on top of the transmission.

Unfortunately TSP is closed this week...

Puddin · 12-26-2018, 06:14 PM

Nope just unplug the connectors and put plugs in the x-pipe for the two rear O2 sensors. Your tuner can turn off the rear O2 sensors.

gomerboat · 12-26-2018, 06:46 PM

I wasn't going to tune until I did e85. I'm bone stock besides the headers.

Puddin · 12-26-2018, 07:07 PM

Well in that case you have two options you can either plug the rear O2 bungs or call BBK I think they have a set of extensions out now for the rear O2s. If you just plug them you will have several codes pop up related to them not being connected. How long till you can tune your car? Adding headers on the stock tune is going to have you running lean so I wouldn't be doing any full throttle pulls and keep the rpms down.

7speed · 12-27-2018, 11:19 AM

My tuner and shop added rear 02 after high flow cats, they said was best way in order to get tune right.

gomerboat · 12-27-2018, 12:18 PM

I don't have cats, so it looks like the best route is to tune out the rear o2's and add e85 while I'm getting a tune.

Mcmillion · 01-05-2019, 12:32 PM

Do you have any pictures of their xpipe? You are one of the first to post about installing it.

Whocares05050 · 01-05-2019, 01:19 PM

Get a tune ASAP and dont race it. Headers on stock car runs a bit lean...

Whocares05050 · 01-05-2019, 01:20 PM

Quote:

Originally Posted by 7speed

My tuner and shop added rear 02 after high flow cats, they said was best way in order to get tune right.

Find a better tuner...

You can just tune the rear 02s out in hp tuners software and problem solved. Seems like you were upsold for no reason... or the tuner isnt that experienced.

7speed · 01-05-2019, 05:44 PM

Quote:

Originally Posted by Whocares05050

Find a better tuner...

You can just tune the rear 02s out in hp tuners software and problem solved. Seems like you were upsold for no reason... or the tuner isnt that experienced.

My tuner is 1 of the best and doubt they tried to upsell me for $8.

Whocares05050 · 01-05-2019, 09:09 PM

Quote:

Originally Posted by 7speed

My tuner is 1 of the best and doubt they tried to upsell me for $8.

I was refering to the high flow cats... which rob HP and 9/10 still throw a code

FrostySS · 01-09-2019, 10:00 AM

Quote:

Originally Posted by Whocares05050

I was refering to the high flow cats... which rob HP and 9/10 still throw a code

I think he was referring to the rear O2 sensors being plugged in for the "better" tune, not the cats.

KingLT1 · 01-09-2019, 10:53 AM

The rear o2's are for reading catalyst efficiency and have little to do with engine fueling. Most with headers or cat delete's turn them off in the ECU.

blk 2013 · 01-14-2019, 11:54 AM

Quote:

Originally Posted by 7speed

My tuner is 1 of the best and doubt they tried to upsell me for $8.

12-26-2018, 04:54 PM	#1
gomerboat Drives: 2017 ZL1 Join Date: May 2018 Location: Phoenix, AZ Posts: 21	Do TSP Headers need rear O2 extensions? Hey guys, I am installing 1 7/8" TSP headers+x-pipe on my 2017 1LE and have used the 1 included O2 extension on the driver's front O2 sensor. My driver's rear O2 sensor (both connection ends are gray) are about 10" apart. Is a rear driver side O2 extention needed or am I missing something? I see no way to pull down the car side of the plug because it is on top of the transmission. Unfortunately TSP is closed this week...

12-27-2018, 11:19 AM	#5
7speed Drives: 21 SS Join Date: Oct 2017 Location: Dallas Posts: 322	My tuner and shop added rear 02 after high flow cats, they said was best way in order to get tune right. Attached Images __________________

01-09-2019, 10:53 AM	#13
KingLT1 Drives: 2016 1SS NFG A8 Join Date: Aug 2017 Location: 46804 Posts: 6,799	The rear o2's are for reading catalyst efficiency and have little to do with engine fueling. Most with headers or cat delete's turn them off in the ECU. __________________ 2016 NFG 1SS A8 Options-2SS Leather/NPP Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA

12-26-2018, 06:14 PM	#2
Puddin Drives: 2016 Camaro 2SS Join Date: Apr 2018 Location: Central Texas Posts: 1,011	Nope just unplug the connectors and put plugs in the x-pipe for the two rear O2 sensors. Your tuner can turn off the rear O2 sensors.

12-26-2018, 06:46 PM	#3
gomerboat Drives: 2017 ZL1 Join Date: May 2018 Location: Phoenix, AZ Posts: 21	I wasn't going to tune until I did e85. I'm bone stock besides the headers.

12-26-2018, 07:07 PM	#4
Puddin Drives: 2016 Camaro 2SS Join Date: Apr 2018 Location: Central Texas Posts: 1,011	Well in that case you have two options you can either plug the rear O2 bungs or call BBK I think they have a set of extensions out now for the rear O2s. If you just plug them you will have several codes pop up related to them not being connected. How long till you can tune your car? Adding headers on the stock tune is going to have you running lean so I wouldn't be doing any full throttle pulls and keep the rpms down.

12-27-2018, 12:18 PM	#6
gomerboat Drives: 2017 ZL1 Join Date: May 2018 Location: Phoenix, AZ Posts: 21	I don't have cats, so it looks like the best route is to tune out the rear o2's and add e85 while I'm getting a tune.

01-05-2019, 12:32 PM	#7
Mcmillion Drives: 2018 ZL1 1998 SS 1992 Typhoon Join Date: Nov 2015 Location: RR Posts: 262	Do you have any pictures of their xpipe? You are one of the first to post about installing it.

01-05-2019, 01:19 PM	#8
Whocares05050 Drives: 2018 Camaro SS 1LE Join Date: Oct 2018 Location: Treasure Coast, FL Posts: 384	Get a tune ASAP and dont race it. Headers on stock car runs a bit lean...

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