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Performance Exhaust SystemsDetailed discussions regarding performance headers, single, dual, street and off-hard racing exhaust systems for your vehicle.
This is a discussion thread titled "Last set of cats are gone!!!!", within the Performance Exhaust Systems forum, part of the Technical & Vehicle Assistance Forums category.
Today i just decided to cut all of it off. I cut right behind the last o2 sensor. Started the truck and no check engine light the truck sounds like my camaro. Gutted the last set of cats and going to weld them back on tomorrow and hope the hooker muffler sounds better. This truck rocks and throttle response seems a little better as well. Now we just need some cams to get the most out of this truck.
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2007 DC 5.7 cutouts,K&N Intake, throttlebody spacer, weight loss program for the truck, and soon to come nitrous 150 shot SHOCKER INC. RACING I SUPPORT STREET RACING!!!!!
Ive gutted cats out before it makes them sound like a old F100 sometimes.Much better idea is to get a muffler shop to weld in small pieces of piping to connect what you removed.
Ive gutted ever cat i ever had and never had one sound like crap. Guess its all in how you put the system back together.
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2007 DC 5.7 cutouts,K&N Intake, throttlebody spacer, weight loss program for the truck, and soon to come nitrous 150 shot SHOCKER INC. RACING I SUPPORT STREET RACING!!!!!
Today i just decided to cut all of it off. I cut right behind the last o2 sensor. Started the truck and no check engine light the truck sounds like my camaro. Gutted the last set of cats and going to weld them back on tomorrow and hope the hooker muffler sounds better. This truck rocks and throttle response seems a little better as well. Now we just need some cams to get the most out of this truck.
Have fun trying to pass emissions next year!
Better have a friend in the business IMO
It is illegal to remove factory installed cats here. I have considered a different approach...with four cats we might be able to get away with removing the muffler, installing an x-pipe in its place, running some dual exhaust pipes and there is a good chance of still meeting the noise limits while being fully legal.
I wonder if anyone has removed the muffler and tested the noise levels?
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2007 Tundra DC 5.7L 4x4 Limited, Timberland Mica, 20" Wheels, NAV, Bed Liner, Run Boards, aFe CAI, Borla Dual-Side Exhaust Craftec Tonneau Cover, Dawn Enterprises Lower Body Side Molding
It's illegal to remove cats in any state. It's a violation of Federal Law (The 1990 Clean Air Act). Anyone can report a violation of this law to the EPA or the local DMV. The fine, last time I checked, was about $2500.00. I guess it depends on the emmisions testing of your state whether you get caught or not. True, California has no smog requirements if your vehicle is six years old or newer. Still, those things are on there for a reason. I am not a tree hugger, and I don't necessarily buy all the global warming hype, but I certainly am not going to make the environment worse, just because it might sound cool. (Which it usually doesn't)
It's time we all grow up..........
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2007 Crewmax Limited - Silver
2.5" OME Front Lift
Toytec 1" Diff Drop
1" Toytec Block rear w/Bilstein 5100 shocks
20" Moto Metal 956
305/55/R20 Toyo Open Country A/T
Line-X Bed Liner
Undercover Tonneau
Console Vault
Two car seats and a box full of princess toys!
Just look at the nannies bleed Congrats on the Stepping Out !!
The secondary Cat remove has no cause or effect to emissions testing.
That has already been proven locally
My cats were removed today and we ran the "tailpipe probe into the flanged 24" pipe exstitions(where the #2 cats used to be and to clear the crossmember) no a wimper from the ECO METER(tree huggers beware WE'RE LEGAL IN TEXAS!!) No viable way to post "PROOF" as it could be argued,so your just gonna have to do it your self if you want PROOF !
Pretty simple ,just blow a hole in the pipe between the 02 Sensor and the Secondary Cat,stuff the talpipe probe in the hole and hit the GO button on the Test Scanner.
Mufflers are on the way,cant wait to get it all put back together.
Just look at the nannies bleed Congrats on the Stepping Out !!
The secondary Cat remove has no cause or effect to emissions testing.
That has already been proven locally
My cats were removed today and we ran the "tailpipe probe into the flanged 24" pipe exstitions(where the #2 cats used to be and to clear the crossmember) no a wimper from the ECO METER(tree huggers beware WE'RE LEGAL IN TEXAS!!) No viable way to post "PROOF" as it could be argued,so your just gonna have to do it your self if you want PROOF !
Pretty simple ,just blow a hole in the pipe between the 02 Sensor and the Secondary Cat,stuff the talpipe probe in the hole and hit the GO button on the Test Scanner.
Mufflers are on the way,cant wait to get it all put back together.
So basically what you are saying is that the secondary cats don't do much other than muffle the sound? And what do you mean you ran the tailpipe probe on yours? You actually tested for emissions without the secondary cats and it still passed?
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DCSB SR5 2WD
-THE MONSTROUS 5.7
-6SPD AUTO
-STEBEL 300HZ TRUCK HORN+2 FACTORY HORNS
-K&N 77 SERIES INTAKE
-TOYTEC 3" LIFT
-DEBADGED
-SYLVANIA H9 LOW BEAM MOD (2100 LUMENS)
-HIR1 HI BEAM MOD (2350 LUMENS)
-SILVERSTAR EURO SIGNALS
-BLACK HEADLIGHT MOD
-BLACK BADGE
-JBL 440W SYSTEM W/ NAV W/ BACKUP CAM
-SONAR
-ESCORT PASSPORT 8500 X50 RADAR
-MOTO METAL 951 18" RIMS
-MAGNAFLOW 14" 2 IN/2 OUT CATBACK EXHAUST -SYSTEM WITH 4" MAGNAFLOW TIPS
-BFG TA KO 285/65/18's!!(32.7")
-CHROME TOYOTA NERF BARS
-BEDLINER
"As I walk through the valley of the shadow of death I have no fear because I am the meanest motherf*cker in the valley"
Last set of cats are gone!!!!
Linear Mode
