Long tube headers CEL

PatrioticLEO · 01-12-2019, 05:30 PM

Has anyone ever installed Long tube catless headers and then installed a bung extension or some form of add on like that to keep the CEL off till I tune it in the spring? I know on my old car I added a bung extension and it kept the CEL off till I tuned it.

Boost Creep · 01-13-2019, 07:29 PM

I would think you would get a p0420/p0430 cat efficiency code after a few drive cycles when the ECU detects Bank1/Bank2 Sensor2 not giving the correct response.

Juiced1 · 01-13-2019, 07:52 PM

There isn't much you can do about it. Without cats the code is going to show up. Even with cats it'll pop up sooner or later. It's annoying to look at but it'll but it won't hurt anything.

PatrioticLEO · 01-14-2019, 06:55 AM

Quote:

Originally Posted by Boost Creep

I would think you would get a p0420/p0430 cat efficiency code after a few drive cycles when the ECU detects Bank1/Bank2 Sensor2 not giving the correct response.

That is what I had assumed but then I had someone tell me you can get a 90° bung extension that will trick it into reading correctly. So I know there are some hit or miss stories with extensions working. Thanks!

PatrioticLEO · 01-14-2019, 06:56 AM

Quote:

Originally Posted by Juiced1

There isn't much you can do about it. Without cats the code is going to show up. Even with cats it'll pop up sooner or later. It's annoying to look at but it'll but it won't hurt anything.

That is exactly what I don't look forward to. Seeing a light on lol. I guess I will have to deal for a shirt time.

6spdhyperblue · 01-14-2019, 07:31 AM

Get green cats

TJay74 · 01-14-2019, 09:12 AM

The code will show up no matter what you do or add until those codes are turned off in the computer. There are about 16 codes that need to be turned off when running catless.

Green cats wont help either, most of the time they are too far away from the exhaust port on the engine and they dont fire off quick enough. The ECM still trips a code for inefficiency with them.

CompleteStreet · 01-14-2019, 10:27 AM

We can give you a great deal on Kooks green cats that don't throw a code if you call us AT 610-628-1563

https://www.cspracing.com/vehicle-pa...snf=1&brand=85

01-12-2019, 05:30 PM	#1
PatrioticLEO Drives: 2018 Camaro 2SS Join Date: Jul 2018 Location: NH Posts: 43	Long tube headers CEL Has anyone ever installed Long tube catless headers and then installed a bung extension or some form of add on like that to keep the CEL off till I tune it in the spring? I know on my old car I added a bung extension and it kept the CEL off till I tuned it.

01-13-2019, 07:29 PM	#2
Boost Creep Drives: '18 1SS 1LE Join Date: Sep 2017 Location: Pennsyltucky Posts: 2,571	I would think you would get a p0420/p0430 cat efficiency code after a few drive cycles when the ECU detects Bank1/Bank2 Sensor2 not giving the correct response. __________________ '18 1SS *1LE* Black, PDR

01-14-2019, 07:31 AM	#6
6spdhyperblue Drives: 6th gen Join Date: Aug 2013 Location: US Posts: 3,675	Get green cats __________________ ‘22 2SS 1LE M6 Summit White - RF, Flexfuel, LT2 intake, 95mm tb, ATI udp, VT ramair, full 28” dragpack - 11.68@122 ‘16 1SS M6 LT2 intake + boltons on DR 11.0@126+ (Sold)

01-14-2019, 09:12 AM	#7
TJay74 Drives: 17 Camaro SS 1LE & 16 Sierra AT CC Join Date: Nov 2016 Location: Norman, OK Posts: 2,424	The code will show up no matter what you do or add until those codes are turned off in the computer. There are about 16 codes that need to be turned off when running catless. Green cats wont help either, most of the time they are too far away from the exhaust port on the engine and they dont fire off quick enough. The ECM still trips a code for inefficiency with them. __________________ 2019 Corvette Z06 2LZ A8 - Halltech CAI, AWE non-catted X-pipe, Mamo V2 ported TB 592rwhp, bone stock 566rwhp 2017 Camaro SS 1LE - Procharger D1SC w/ Tial 2" BOV & Race intercooler / ARH full length catless headers / Alky meth injection system - 650rwhp on conservative tune SOLD

01-13-2019, 07:52 PM	#3
Juiced1 Account Suspended Drives: 2012 2SS CAMARO 45th Join Date: Apr 2011 Location: St. Charles, IL Posts: 18,663	There isn't much you can do about it. Without cats the code is going to show up. Even with cats it'll pop up sooner or later. It's annoying to look at but it'll but it won't hurt anything.

01-14-2019, 10:27 AM	#8
CompleteStreet Drives: 2018 Camaro ZL1 A10 Join Date: Nov 2018 Location: West Chester, PA Posts: 462	We can give you a great deal on Kooks green cats that don't throw a code if you call us AT 610-628-1563 https://www.cspracing.com/vehicle-pa...snf=1&brand=85

User Name		Remember Me?
Password