Pro Flow Exhaust System
All of our Pro Flow Exhaust Systems are made with 409 stainless steel tubing, 426 stainless steel straight-through Magnaflow muffler and 3/8" thick mild steel flanges. The straight-through design of the Magnaflow muffler offers the highest flow while still maintaining a smooth, yet authoritative tone without attracting unwanted attention. They are then ceramic coated for long lasting good looks and protection from the elements. LC Engineering designs our kits to be a direct fit application that requires little or no modifications, and uses factory exhaust hanger locations. This bolts up behind your factory catalytic converter or one of our high flow performance catalytic converters. This exhaust system features 2-1/2" tubing with a 3" polished stainless tip. Every kit is shipped complete with all the instructions and hardware you will need for a quick and easy installation process.
NOTE: This kit is designed as a direct bolt on for all Cab styles. From Standard cab trucks to double and access cab, the front extension pipe can be trimmed to the appropriate length. LC Engineering does NOT recommend wrapping our headers with any sort of exhaust wrap. Doing so will increase the likelihood of a premature failure of the header, as it holds contaminants to the exhaust tubing and increases the chances of corrosion. Exhaust wraps will void any and all warranty claims.
Contact our Tech Support Line for further information at 928-575-2174.
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Note: Images are for illustration purposes only. Images may not represent the product listed. Please contact customer service with any questions or concerns: 1-928-505-2501.
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2005-2012 1GR 4.0L Engines
To open a printable PDF version of this instruction CLICK HERE
LC Engineering has designed our Pro Flow Exhaust to fit any Tacoma 1GR Truck 2005-2012. It comes with a front pipe that is designed to be trimmed to the correct length for your cab or bed length. Please read and follow the directions completely to ensure proper fitment.
Installation (It is important to install in this order):
- Remove the stock exhaust system from the catalytic converter back. Be careful not to damage the hangers or brackets.
- Install the muffler in the stock location, using the rubber grommets from the original system. The muffler will sit vertically with the two hangers towards top.
- Attach the tailpipe section to the muffler using the supplied gasket & hardware. Hang the rear tail pipe section to the factory rubber hangers using the supplied clamp & hanger assembly for your vehicle's year (see picture). Leave the clamp and bolts loose.
- Check alignment and location of muffler and tailpipe. Hangers may require a slight adjustment for proper alignment.
- Install the S-pipe into the muffler slip fit inlet make sure that it is in past the slit in the muffler inlet. The kit comes with a long straight pipe (intermediate pipe) to connect the catalytic converter to the S-pipe assembly. The pipe will need to be cut short for some cab configurations. Once you have the S-pipe muffler & tailpipe section installed, you can determine where to cut the intermediate pipe. When cutting the pipe, make sure to leave 1.5”-2” extra to go inside the swedged end of the S-pipe assembly. Remember: Measure twice, cut once!
- Once you’ve cut the intermediate pipe to the correct length, Install the intermediate pipe section to the S-pipe using the supplied clamp. Leave clamp loose. Attach the intermediate pipe section to the catalytic convertor using the new gasket & re-using stock hardware and Tension Spring. Leave loose.
- Check the clearance of your Pro Flow Exhaust System to the floor pan, chassis components, parking brake cable assembly, driveshaft, etc. Adjust system as needed.
- Tighten bolts and then firmly tighten all exhaust clamps.
- Start engine and check for exhaust leaks. Tighten flanges and clamps as needed.
NOTE: This system is designed to fit all cab and bed configurations. The FRONT INTERMEDIATE PIPE SECTION WILL HAVE TO BE CUT to length for some applications. LC Engineering recommends using O2 safe, high-temperature silicon on slip connections to prevent small exhaust leaks. Failure to follow these instructions explicitly may make installation more difficult. We strongly urge you to read and understand these directions, and follow them directly. Forcing, damaging, welding or cutting (other than what’s needed for the front pipe) will void warranty!
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