Interest in Custom built 4th gen V8 4.7 Doug Thorley Headers

Would you like the DT headers to have a Highflow catalytic converter?

  • Hell no! Open and loud.

    Votes: 35 9.1%
  • Yes, I would like to be legal.

    Votes: 283 73.9%
  • I don't care either way as long as I get them!

    Votes: 65 17.0%

  • Total voters
    383
Have any CA folks used Magnaflow's CARB approved 447206 universal cats? They have a 2.5" inlet/outlet, they look wider than the OEM pieces though so I'm a little concerned about fitting in the engine bay.
 
apparently DT is making 03-04 and 05-09 long tube headers im assuming to bolt directly onto the DT 03-09 y-pipe

Correct, I got them made working with Doug thorley, and got them a vehicle that they kept for two weeks. This was a long project but we got it done thanks to many of you helping on here with me. This wouldn't have never happened without some of the forum members on here.

I can now sell you guys the long tubes AND new Y pipe finally, but too busy to get them on the site, call/text to order, 717-319-2100.

Short tubes below for those that want those :)

Doug Thorley 03-04 headers

Doug Thorley 05-09 headers
 
~$730. long tube headers with factory y-pipe cats or aftermarket y-pipe cats (without restricted crimped tubing) would allow for no welding. however by adding o2 sensor bungs after the cats can it be made to keep the cel off?!?!

~$425 DT y-pipe, no cats
 
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Correct, I got them made working with Doug thorley, and got them a vehicle that they kept for two weeks. This was a long project but we got it done thanks to many of you helping on here with me. This wouldn't have never happened without some of the forum members on here.

I can now sell you guys the long tubes AND new Y pipe finally, but too busy to get them on the site, call/text to order, 717-319-2100.

Short tubes below for those that want those :)

Doug Thorley 03-04 headers

Doug Thorley 05-09 headers

How much are the long tubes, give or take? Planning to keep cats on my y-pipe, but long tubes makes for a no-weld solution to headers.

They are only about $90 more than the shorties! And yes, NO WELDING on the long tubes. The way this is designed, it's the best you can get for the money, where as the Toyota headers are over double the cost and will crack again when around 100k miles.

Call or text to order. Long tubes and new Y in stock as we speak. 717-319-2100
 
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Call or text to order! 717-319-2100

Here all weekend to answer questions, etc.
 
Nice

Can you post some close up pics of the flanges? I want to see the ceramic coating on the mild steel components. Those being the flanges and air tubes. The runners as we know are 304 stainless.

Burtman does it again. Long awaited and it’s finally here

Place your order as soon as you can!!

drIngSo_d.jpg
 
Any word on O2 sensor bungs/cats/CEL or emissions testing on the long tube with a new new y-pipe?

Where are you located? This isn't an issue and I have the CEL eliminators. These don't come with the headers, but the O2 extension wires do. I have everything needed, just call to order, or links below:

Doug Thorley 03-04 headers, SHORT AND LONG TUBES

Doug Thorley 05-09 headers, SHORT AND LONG TUBES

Also, you call/text to order and can answer all questions, 717-319-2100
 
Is that a jig? If so, can it be used to fab up some shorty's w/ cats w/out having to take the stock manifold off first? Also, if you do an SAI delete on an 05-09, can you use the 03-04 headers?

Some pretty pics compared to stock. Remember. These give 30 hp gain! It’s just nuts.

05-09’s back in stock and can SHIP MONDAY!!! Links above in my last post
 

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