Long tube headers for 1 first gen

[Coletundra]

Can you get street legal long tube headers for the 2000 tundra 4.7?

[ZapcoTundra]

yes you can. ive got a pair of rare trd long tubes that im waiting to put on mine.

[Remmy700P]

To be fair, the TRD tubes are really considered a mid-length tube that can still use the OEM cats in their present positions (after some welding). The long tubes, like Doug Thorley's etc require either the removal or the custom placement of the cats.

[toyeyoda]

i'll let you know if i pass my emissions test one i get mine on lol! if i can ever get to them

[Puffnstuff]

Didn't stans also offer a mid length setup?

[Coletundra]

To be fair, the TRD tubes are really considered a mid-length tube that can still use the OEM cats in their present positions (after some welding). The long tubes, like Doug Thorley's etc require either the removal or the custom placement of the cats.

I have no problem with repositioning my cats for real long tubes, will it still pass smog if you move them tho?

[seanpistol]

o2 sensors?

[ZapcoTundra]

you can get o2 sensor extensions. but when i get mine on, im gonna try and get them as close to factory as possible, im gonna get all new sensors/cats and SS tubing.

[Highwaylizard]

Didn't stans also offer a mid length setup?

Stan's are true long tubes and will require moving the cats.

I have no problem with repositioning my cats for real long tubes, will it still pass smog if you move them tho?

Everyone who has run long tubes and relocated the cats have had problems with the CEL which I would guess would make it difficult to pass an emissions test.

[Coletundra]

Damn. Why would the cel go off if the o2 sensors are still there? And couldnt you just clear the code so when you went to smog it it would be off?

[toyeyoda]

the cel fires because the temperature varies from when it's in it's original location. something to do with the voltages being inconsistent. you may want to read this post to give you a better understanding. How a properly built exhaust system works by escondidotundra. it's a very good article and definitely worth the read.

i have a set of long tubes i have to install soon if i can help it. i plan on using my factory cats along with the o2s. escondidotundra made me up a bung to try and "fool" the ecu. hopefully it will work.
i will post my progress once she's in motion.

[Highwaylizard]

the cel fires because the temperature varies from when it's in it's original location. something to do with the voltages being inconsistent. you may want to read this post to give you a better understanding. How a properly built exhaust system works by escondidotundra. it's a very good article and definitely worth the read.

i have a set of long tubes i have to install soon if i can help it. i plan on using my factory cats along with the o2s. escondidotundra made me up a bung to try and "fool" the ecu. hopefully it will work.
i will post my progress once she's in motion.

Definitely keep us posted on how that O2 bung works out.

[Coletundra]

Yea. Thanks for all the help, do you know if your going to have to retune your computer to work with the headers and if putting these on will affect the compression?

[Lalo]

Doug Thorley headers are now CARB stamped, FYI.

[UPbuilder]

Doug Thorley headers are now CARB stamped, FYI.

Bummer that they're shorties though. In all my searching the only long tubes I've found is Pacesetters.