Thinking of pulling the trigger on DT headers for our 06. Because of the steep price of admission Im looking for some feedback and reviews.
Who is running Doug Thorley Headers on a VVTI (1 Viewer)
- Thread starter LandCruiserPhil
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- #3
Have you heard anything as for pros, cons, or HP gains?
Hoping the install is 100% bolt in with the ability of using factory exhaust piping flanges. Eliminating need for exhaust modification offset the cost some.
Phil are your stock manifolds leaking? If they were it would be an easy jump. Otherwise I'm not sure any performance benefit would stand alone enough to be worth the effort and expense. My prior experience with headers in general has been "why did I start this..."
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- #5
Ya us old guys
On the flip side I remember my collector days of 70SS BB Chevy and paying huge money for stock manifolds. Im hoping the new generation
with help from CNC, better materials, and input from the the old guys have stepped up. The research from the non VVTI DT SS looks positive.If you can get 10% 25hp thats only $35 per HP - Sounds like a good male justification value
I have found over the years it does matter how much HP you have you will eventually find the bottom of the throttle and want more
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.Ya us old guysdonthavegreathorrible experience with header but we continued to run them.
Im hoping the new generation
If you can get 10% 25hp thats only $35 per HP - Sounds like a good male justification value
I have found over the years it does matter how much HP you have you will eventually find the bottom of the throttle and want more
I hear you on all counts Phil. You do know however that if you slap those on a stock single exhaust will seem, well, lame. Go big and dual it. The exhaust note alone will be worth every penny.....
I'm interested in this as well? How much do they cost? How much HP gain? Someone please spoon feed me all the info 
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- #9
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I hear you on all counts Phil. You do know however that if you slap those on a stock single exhaust will seem, well, lame. Go big and dual it. The exhaust note alone will be worth every penny.....
The man in me agrees 100%. I have removed the rear resonator can and changed the waterheater of a muffler to something 1/2 it weight/size but because its our travel/tow car it needs to remain wife approved limiting some of the proper mods.
- Thread starter
- #10
I'm interested in this as well? How much do they cost? How much HP gain? Someone please spoon feed me all the info
Use your up scroll button and you will find your answers
So $875? That's not as steep as I thought...Wonder if there's any issues with passing SMOG in CA....
Well, in that case, I hope the front exhaust pipes are shot and the muffler has a broken baffle.
Dt headers should add about the same to vvti engines. The original header design is so restrictive.
One of the best upgrades out there. Install is pricey.
One of the best upgrades out there. Install is pricey.
Mike6158
Random Pixel Generator
Eight
Seventy
Five
for headers?
Headers weren't that expensive in 1979. Did something happen? 
Seventy
Five
for headers?
Headers weren't that expensive in 1979. Did something happen?
Eight
Seventy
Five
for headers?
875 2017 Dollars = 245 1979 Dollars. Sounds about right.
I have the DT Headers and Exhaust and love it. Ran them both for the last 4 years. With those and a tune it's a beast.
Mike6158
Random Pixel Generator
875 2017 Dollars = 245 1979 Dollars. Sounds about right.
Yeah... that's why I asked if "something happened" and added a selfie 
A little off-topic, but similar and maybe someone in this thread will have an answer.... I was wondering about the Doug Thorley Cat-back system on a VVTI also. Their website shows the cat-back as fitting 99-05, which really doesn't make any sense. Why not 98, and why not 06-07? I assumed the exhaust was the same for the whole 100 series run, but maybe I'm wrong. Anyone have it on an 06-07? I'd love a little more growl.
Well in that case you must be close to my age...
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- #20
