05-09 4.7L Doug Thorley Headers, group buy

Am actually a little surprised that some enterprising soul hasn't set up a jig and offered to turn these out in a flange to flange configuration.... Would think there is a market out there that would pay for those over the current DT configuration....

I would have paid a couple hundred more for a pre-welded DT header/CAT combo. Could probably have done the install myself if they came pre-welded.
 
I would be willing to pay significantly more for a straight bolt on with cat included as well. Infact that's the only reason I have not pulled the trigger on a set of theses.
 
I would be willing to pay significantly more for a straight bolt on with cat included as well. Infact that's the only reason I have not pulled the trigger on a set of theses.

my shop charged me $50 each to weld it on. If you buy aftermarket cats, that's like $70. So..

$700 --headers
$240 --cats + weld

$940 total for both. You could reuse your factor cats though...
 
Still Leaking

So, I purchased these headers, and went thru with installing them. The exhaust leak is much quieter, but is still there. Weirdly enough it is only present when accelerating in drive, and does not happen in neutral. Any suggestions?
 
So, I purchased these headers, and went thru with installing them. The exhaust leak is much quieter, but is still there. Weirdly enough it is only present when accelerating in drive, and does not happen in neutral. Any suggestions?
Then it's somewhere else. Wait for it to cool down, Jack it up so you can slide around under it, then start it and run your hand down the pipe listening and feeling for the leak. Or when they welded it they missed a small spot.

Sent from the drivers seat of my 05 4runner.
 
The problem with that procedure is the only way to cause it is by putting the car in drive. I had it in neutral and slowly ran it up to 4k rpm with no noise, but jump in it and drive it down the road the noise is clear as day around 2000 and above.
 
Then it's somewhere else. Wait for it to cool down, Jack it up so you can slide around under it, then start it and run your hand down the pipe listening and feeling for the leak. Or when they welded it they missed a small spot.

Sent from the drivers seat of my 05 4runner.

After taking it down the highway to get home the noise got louder and I found the leak. It is in the top of one of the welds. hopefully they can reweld it with it installed on the car
 
Sucks I just got a 4th Gen. Was there going to be another group buy happening at all? I'd buy them yesterday if I could.
 
I'm back. New black Friday sale going on!

Doug Thorley 03-04 headers ORDER LINK

Doug Thorley 05-09 headers ORDER LINK

ALSO, I CAN THE MAGNAFLOW/FLOWMASTER CATS/MUFFLERS for anyone at great prices

Call/text me at 717-319-2100 to order over the phone, or to order online with a Credit Card, click below

I was on vacation out of country and just got back. Did I miss this sale? I can't remember how much they were before. I'm from Canada and I was telling myself they were $1000 by I'm not sure anymore :)
 
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I was on vacation out of country and just got back. Did I miss this sale? I can't remember how much they were before. I'm from Canada and I was telling myself they were $1000 by I'm not sure anymore :)

Nope! All good to order. I'll be sure to post in there first when the deal is over. Good to go to place your order...

This deal is only for a few more days!

Doug Thorley 03-04 headers ORDER LINK

Doug Thorley 05-09 headers ORDER LINK

ALSO, I CAN THE MAGNAFLOW/FLOWMASTER CATS/MUFFLERS for anyone at great prices
 
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Do you have an estimate of time frame on these? If ordered today, roughly when should I receive them?

Thanks!
 
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