Header Install Today

[chimyz]

Just needed to share...
Had my Doug Thorley short headers installed today...Finally...they have been sitting in the garage for almost 4 years and were supposed to be on my '08 LC.

The shop that did it said it was a pain for anyone with big hands...really tight to get in.

There is no difference in the sound, maybe just a touch louder, but not really noticeable. This is probably because the cats, muffler and resonator are all stock for now. Where there is a difference is in power. It all of a sudden feels like there is no hesitation, maybe because the ease up in back pressure, and the truck just wants to go. Interestingly, it didn't automatically down shift going into a turn. Can't be sure what gains are torque and hp wise, but there has to be something.

 

[bjowett]

http://dougthorleyheaders.com/view....71.600x400.2007Toyota_Tundra_5.7L_THY560Y.JPG

 

[alwaysme]

planning to remove the cats anytime soon? and congrats on the install!

 

[chimyz]

Cats are gonna stay. I may do a new muffler and remove the resonator, but not sure when. The headers have added a little punch, without all the noise. I'm happy with it.

 

[topgun32]

LC200 has 4 cats.. first 2 have the sensors, back 2 no sensors. I removed the back 2, and it did not mess with the sound or create any drone.

It passed the wife test.

Shorty headers is a good idea for this engine.. but in my view air intake is really restricted. I made a home version of intake by cutting a 4" x 4" square at the bottom of my air box and adding K&N. Beautiful growl sound and once it hits Vvti.. truck pulls nicely.

I would love to add more power to this thing.. but brakes are not in par to the engine power.

 

[chimyz]

Bigger brake kit, like the Tundra, make a huge difference.

With the back 2 cats removed, does it restrict it from passing emissions? I would love to rebuild from the shorty headers back some day.

Motor has tons of power and pull with the headers...its almost like its constant, without hesitation.

 

[saharabeast]

How hard is the conversion to the Tundra breaks?
Is it a str8 bolt on?
Appreciate any advice

 

[bjowett]

The LC will not throw any codes with the second set of converters removed. If warmed up, it should pass a sniffer test. Obviously, it won't pass a visual inspection, so some dummy resonators that look like converters should be installed in their place. After the shorty headers, the pipe between them (headers) and the first converter is a bit of a restriction, but does provide nice low end torque.

The Tundra brakes bolt on, but a few machining mods are required to some of the various parts. I have a kit available, drop me note if interested.