Cat Experiment - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

MedicalCowboy · 02-19-2014, 01:44 AM

Funny name, yeah I know. So for the experiment I'm thinking of removing both sets of cats on my L99 then putting the small rear cats where the large front ones are located. Seems like it would act as a high flow cat. I'm not 100% sure on this, but I'll keep yall posted on it.

2012LS3VERT · 02-19-2014, 08:11 AM

I'd be willing to bet it'll throw a CEL. The smaller rear cats probably don't have enough surface area to have the efficiency required to not throw a code. They may flow slightly higher because they are shorter, but your best bet would probably to just gut the rear one and leave the front one if you are not going to tune out the rear O2s. If you were going to tune out the rear o2s, I'd leave the rears where they are at and just gut the front ones. I just removed mine to gut them, then put them back up just like they were. They would be a pain to get to line up just right if you got to rearranging the piping setup.

Dfault · 02-19-2014, 08:22 AM

^

It WILL throw a code simply because it isn't meeting the currently program parameters. It won't throw a CEL right a way, but it will after several miles of driving.

usafboy · 02-19-2014, 11:00 AM

Just ditch the cats all together and get it tuned lol that's what I did

02-19-2014, 01:44 AM	#1
MedicalCowboy Save lives? Hahahahaha Drives: An ambulance, a 2ss/rs, x-wing Join Date: Sep 2013 Location: Alabama Posts: 371	Cat Experiment Funny name, yeah I know. So for the experiment I'm thinking of removing both sets of cats on my L99 then putting the small rear cats where the large front ones are located. Seems like it would act as a high flow cat. I'm not 100% sure on this, but I'll keep yall posted on it.

02-19-2014, 11:00 AM	#4
usafboy Drives: 2010 Silver SS/RS LS3 Join Date: Nov 2011 Location: Colorado Springs, CO Posts: 882	Just ditch the cats all together and get it tuned lol that's what I did __________________ 2010 Silver Ice Metallic Camaro SS/RS LS3 Mods...so far: resonator/muffler delete, tinted everything, '13 shift knob/boot, bowtie delete, PFADT sway bars, CAI intake, Hurst short shifter, JBA cat deletes, BMR trailing arms/outer bushings/steering rack bushing, Bo White ported TB. Rhino79 Dyno tuned...405 HP/399 TQ

02-19-2014, 08:11 AM	#2
2012LS3VERT Drives: 2012 2SSRS Vert, Black w/M6 Join Date: Jan 2013 Location: Montgomery, AL Posts: 1,265	I'd be willing to bet it'll throw a CEL. The smaller rear cats probably don't have enough surface area to have the efficiency required to not throw a code. They may flow slightly higher because they are shorter, but your best bet would probably to just gut the rear one and leave the front one if you are not going to tune out the rear O2s. If you were going to tune out the rear o2s, I'd leave the rears where they are at and just gut the front ones. I just removed mine to gut them, then put them back up just like they were. They would be a pain to get to line up just right if you got to rearranging the piping setup.

02-19-2014, 08:22 AM	#3
Dfault Drives: 2014 Camaro SS Join Date: Sep 2013 Location: Waco, TX Posts: 989	^ It WILL throw a code simply because it isn't meeting the currently program parameters. It won't throw a CEL right a way, but it will after several miles of driving.