Log in or Sign up

Welcome to Tacoma World!
You are currently viewing as a guest! To get full-access, you need to register for a FREE account.
As a registered member, you’ll be able to:

Participate in all Tacoma discussion topics

Communicate privately with other Tacoma owners from around the world

Post your own photos in our Members Gallery

Access all special features of the site
Quick Links: Made a mistake... Best Sounding Cold Air Intake Borla Pro XS a good purchase!? Magnaflow 12226 on my 09 Tacoma (pics & video) What paint/pen should be used for URD Stealth Pulley? Where can I find "Cargo Gates or dividers?"

Performance gain from bypassing 1st cat?

Discussion in 'Performance and Tuning' started by TRDBoonie, Feb 25, 2010.

Post Reply

Feb 25, 2010 at 5:07 PM

#1

#1
TRDBoonie [OP] New Member

Joined:

Feb 9, 2010

Member:

#31072

Messages:

4

Gender:

Male

Gladstone OR

Vehicle:

03' TRD double cab 4wd v-6

3" Revtek lift, K&N intake, Flow master, Doug Thorley headers,

I'm getting ready to install my Thorley headers and was wondering if anyone has bypassed the first cat on there Tacoma's. If so how did it effect your performance and any problems with the check engine light coming on?

TRDBoonie, Feb 25, 2010

#1

Post Reply

Products Discussed in

Mobil 1 104361 75W-90 Synthetic Gear Lube - 1 Quart (Pack of 2)

ABS Plastic Sheet 3-pack 12" X 24" X 0.0625" (1/16") 3 Pack, Black Haircell, for VEX Robotics Teams, Hobby, DIY, Industrial. Easy to Cut, Bend, Mold.

E-cowlboy for Toyota/Lexus Crankshaft Damper Pulley Holding Holder Harmonic Tool with 2PCS Crank Bolts

AEM (30-4110) UEGO Air/Fuel Ratio Gauge

Toyota/ exxon mobil Case of 6 Quarts Full Synthetic TGMO SN 0W-20 Oil

Hayden 679 Universal 11” Rapid-Cool Add-On Transmission Cooler to Enhance Cooling (not for direct replacement of the factory unit)

ARB CKMA12 On-Board Air Compressor High Performance 12 Volt for Air Locker Differentials and Tire Inflation

Genuine Toyota Exhaust Pipe Center Gasket

BG 44K Fuel System Cleaner Power Enhancer 11oz.

ALEOED M12x1.25 mm Self-Locking Nylon Insert Hex Lock Nuts, Pack of 6

Spectre Performance 81413 Mass Air Flow Sensor Adapter

Lawson Industries 66906 Stainless Steel Stamped Y-Pipe

Audak 1 Pair 3" Aluminum Mounting Bracket Tube Clamp for Bullbar Roof Rack Roll Cage (75-77mm/2.95-3.03" Adjustable)

Sutemribor 304 Stainless Steel 7-21mm Single Ear Hose Clamps Assortment Kit, 128PCS

Michigan Motorsports Mass Air Flow Sensor Harness 24" Fits Denso 5 Wire pin MAF Fitment for Tacoma 4 Runner

Henry Barrier BLUESKIN WTHR 4INX50FT BH200WB4559

Keco 100ft – 1" PET Expandable Braided Cable Sleeve – Wire Sleeving for Audio Video and Other Home Device Cable Automotive Wire - Black

BlueDevil Products 00202 Complete Fuel System Cleaner - 16 Ounce

GM LS-Series Engines: The Complete Swap Manual (Motorbooks Workshop)

CBM Motorsports - cbm-10827 Billet Fuel Line Adapter for 5/16 Hard Line to -6AN

EVIL ENERGY 30 Micron Inline Fuel Filter with 6AN 8AN 10AN Adapter Universal 60MM

Spectre Performance 8741 Black 3" Air Duct Hose

Fastronix 3/8" 4 Stud Stainless Steel Power Distribution Block with Cover

ESPEEDER Universal Oil Catch Can Kit Baffled Reservoir Tank Aluminum Red 300ml Kit

ICT Billet Straight -10AN Flare Male to 1/2" NPT Taper Pipe Turbo Drain Adapter Fitting Black Anodized Designed and Manufactured in the USA F10AN500NPXL

Continental OE Technology Series 4070834 7-Rib, 83.4" Multi-V Belt

Blue Demon 308LFC-O X .035 X 1# Spool stainless steel flux cored gasless welding wire

Cuztom Tuning 1LB Premium Cylinder Stainless Steel Manual/Automatic Transmission Heavy Weighted Shifter Gear Shift Knob Selector

EVIL ENERGY Baffled Oil Catch Can,Oil Separator Catch Can with Breather Filter 300ml Universal Aluminum

aFe Power MagnumFLOW 90-50000 Air Filter Restore Kit (Single, Gold)

Knipex 8801-10 10" Alligator Water Pump Pliers

Heli-Coil Helicoil 5546-6 M6 x 1 Metric Coarse Thread Repair Kit

ARP 912-0001 Thread Cleaning Chaser, M8 x 1.25"

3" Inlet NETAMI Glossy Real Carbon Fiber Stainless steel Exhaust Muffler Tip 3" Inlet/4" Outlet) Chrome Polished

4x HPS 2.64"-2.95" (67mm-75mm) Marine 316 Stainless Steel T-Bolt Hose Clamp 2-3/8" (60mm) Hose ID

Bosch 0261231006 Original Equipment Engine Knock Sensor - Compatible With Select Porsche 944, 968; Saab 900, 9000; Volvo S90, V90, 240, 244, 245, 740, 745, 760, 780, 850, 940, 960

DIYAutoTune GM Closed Element CLT or IAT Sensor with 6' Pigtail

OTC 4524 Stinger 45° Hose Clamp Plier , Red

iCrimp SN-025 Dupont Crimper, O Crimp Tool, D-sub, Dupont Connector Wire Crimp Tool AWG 28-18(0.1-1mm²) for Harwin, Amphenol MINI-PV Connectors Molex KK 396 Micro Timer Connectors

RUSSELL/EDEL 610165 Full Flow Hose Endswivel 90 Deg -6An All Blk Finish

Gumout Expert Series Regane (Fuel System Cleaner)

Edelbrock 632050 ProFlex -6AN Stainless Steel Braided Hose - 3 Feet