theville89

what about the rear o2 sensor? it there a place on those long tubes to plug the o2 back in or is that elimnated too. what could i see performance wise if i put those on my truck.

Schertz7

the rear set of O2 sensors will be extended all the way back behind the new cat, where you will have to drill and weld 2 nuts to the exhaust tubing for the O2 sensors to thread into. There is no better way to flow exhaust out of the motor than full length headers. Full length headers look and sound awesome, just a pain in the *** to get everything goin in the right direction, as far as emissions go.

theville89

that sucks, i was considering buying those, but i thought it would be a pure bolt on thing. i dont own a welder and dont really want to fork out the hundreds to have a shop do it.

when you say behind the new cat, do you mean you have to add new ones. i thought the long tubes basically remove the cats. why add some? is it because of a legal thing. what kind of hp gain does a setup like this run.

DHFF

Does anyone make these for the new 5.4?

Schertz7

http://www.pacesetterexhaust.com/quiktrip.php

Schertz7

you dont have to put a new cat on it, I would have to because I live in phoenix, which is emissions controlled. I dont remember louisville bein emission control though

fordmanforever

I agree with DHFF about the torque issue, There's no doubt about it long tubes win in the torque dept. But the short tubes are better than the factory stockers anyday. But it depends on the cost. Either way will net gains. On the long tubes if they don't make a cat pipe for it you could make a cat pipe at a good muffler shop. Again, cost weighs in again. I'll probably just go with shortys on mine.

Schertz7

these are for your truck

theville89

we use to have the whole emissions testing BS, but about 10 yrs ago or more but they tossed it. ky is a pretty broke state so they cut funding for alot of crap around here to brake even.

fordmanforever

If no emissions there I would deff. go for the Longtubes w/o cats