Interest in Custom built 4th gen V8 4.7 Doug Thorley Headers
- Thread starter brighton
- Start date
Bonyfattony
New member
I called them today. They officially receive the headers back from ceramic coating on the 16th.
They also informed me the headers will have a bung so it should not throw any codes.
I will follow up with them next week so we can figure out a day and time to get them installed on my truck. I will make sure to give you guys feedback and potentially a sound clip once installed.
They also informed me the headers will have a bung so it should not throw any codes.
I will follow up with them next week so we can figure out a day and time to get them installed on my truck. I will make sure to give you guys feedback and potentially a sound clip once installed.
HOJeepster
New member
Yes, please do!
Red
Member
I'm curious to see what exactly is needed and what will work.
it says straight bolt on but that cant be possible with the need to buy aftermarket cats, from the diagram it looks like the stock cats are one solid piece with the stock header, so they can't be reused correct?
do cats come in standard sizes? I just did a quick search and Jegs seems to have 13" and 16"
I'm not very familiar with swapping out exhaust. Is the bung the port the oxygen sensor goes into?
it says straight bolt on but that cant be possible with the need to buy aftermarket cats, from the diagram it looks like the stock cats are one solid piece with the stock header, so they can't be reused correct?
do cats come in standard sizes? I just did a quick search and Jegs seems to have 13" and 16"
I'm not very familiar with swapping out exhaust. Is the bung the port the oxygen sensor goes into?
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coconutpete
New member
Thanks. I'm curious as to the way they will install. Look forward to seeing it.
Red
Member
Since we have 4 cats and the o2 sensors are located in between the two sets of cats, if you remove the upstream cats (the ones closest to the motor) then that would probably throw off your readings at the o2 sensor and probably cause a CEL. because the computer will think your cats are faulty.
I don't know, I'm glad someone is already getting this work done so they can answer all of our questions, I don't need this upgrade at the moment but someone I know does so I'm just trying to figure it out for them.
I'm no expert but if you remove the first set of cats that are on the manifolds, could you not relocate the o2 sensor downstream of the second set of cats and the computer would be none the wiser?
coconutpete
New member
That's a good question Red - I'm also very curious about this.
Sadly I'm considering selling my 4Runner due to our changing family needs, but my OCD won't allow me to half a$$ anything before I do, so I would need a way for it to still pass smog.
Sadly I'm considering selling my 4Runner due to our changing family needs, but my OCD won't allow me to half a$$ anything before I do, so I would need a way for it to still pass smog.
coconutpete
New member
These look to be so popular they crashed the URD store hahahahaha:boom:
montana_jeepn
New member
^
That was me....drooling over these....
Will the ceramic coating be ruined if you add a bung dedicated for a wideband sensor? I figure it would be easier to do this prior to install.
I'm in VA so emissions are a concern and thus am curious about the CAT's as well.
That was me....drooling over these....
Will the ceramic coating be ruined if you add a bung dedicated for a wideband sensor? I figure it would be easier to do this prior to install.
I'm in VA so emissions are a concern and thus am curious about the CAT's as well.
Bonyfattony
New member
I spoke with DT and they had a delay with the ceramic coating on the headers. They have yet to receive them and should get them soon. I hope the next time I contact them, we will be able to set something up and I get these boys on my truck.
coconutpete
New member
Thanks for the update and for taking the lead on this.
I really hope there is a way to still pass smog with this.
Side question: I keep reading about people having their cats stolen due to the precious metals that OEM cats contain. Do you all think one could actually collect money for cracked OEM headers w the cats?
I really hope there is a way to still pass smog with this.
Side question: I keep reading about people having their cats stolen due to the precious metals that OEM cats contain. Do you all think one could actually collect money for cracked OEM headers w the cats?
All they want is the cat, but yes you can. Just cut it off and take to salvage yard. Some are worth a good bit of money
HOJeepster
New member
Any update from anyone that bought these headers and install yet?
HokieRunner
New member
See posted update about 4 posts up on 9/22. Thorley doesn't have them in hand yet.
edwardvmassey
New member
Any updates? Needing to replace on my 05 V8
HOJeepster
New member
bump
Bonyfattony
New member
Still waiting on DT....
I spoke to Mike at DT on Friday actually, 10/10/14, and he informed me there was still a delay with ceramic coating... He was hoping to release these before the show in mid September but there was a delay. Now he is hoping to get these out before SEMA but is uncertain. He said he will contact me once he has it.
I am dying for these.... I am sure everyone else it too...
I spoke to Mike at DT on Friday actually, 10/10/14, and he informed me there was still a delay with ceramic coating... He was hoping to release these before the show in mid September but there was a delay. Now he is hoping to get these out before SEMA but is uncertain. He said he will contact me once he has it.
I am dying for these.... I am sure everyone else it too...
LobstaMobsta
New member
I would take a set if they are catted- also mine is pre vvti ?
coconutpete
New member
Did you read the thread or just the title? They are not catted, they are only for VVT-i.
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