Long tube headers for Tundra.....yes or no

The TLDR: if you are chasing power numbers look elsewhere instead of headers. Consider the other benefits but not if your state has strict emissions. The post I mentioned talks to cylinder temps being lower from running LTHs vs running fat AFR for cooling.

If you are looking for a power adder the gains from LTHs are marginal compared to what the base blower will add. I think I jumped up from 520WHP to 530WHP on the same dyno with the stock R2D2 "Y" exhaust. This is less than 2% power. The builds with SCers + LTH making more gains are almost exclusively at the top and are going with a less restrictive setup usually catless with straight pipes.

What is consistent with folks running headers is the reporting of lower boost while making same or more power; translates into less restriction and better efficiency.

While headers aren't required for cat upgrade most of the aftermarket headers ship with high flow high power rated cats. So while the stock cats flow well chances are the boosted Tundras will end up crapping their stock cats out the exhaust at some point especially if you WOT around a lot.

The loss of low end torque of LTH is overstated on a SCed build. This is probably very noticeable on a NA build with any blower the low end TQ is already higher than what is lost on a NA set up. So you may loose 10 TQ with LTH on the low end but you are making 100+ TQ out of the gate with the blower. You won't notice it with how quickly the blower kicks in.

While you search for your answer the main problem you'll see is you have such a variety of builds (as in different mods) and how HP #s are reported. Most don't report or even know their baseline stock numbers. Also consider since the early builds tuning options have improved considerably as well. Even the header construction varies from LTH set to set.

 

That's funny...... I didn't want an exhaust system before reading this thread. ?????
That X pipe looks tempting.
I went thru this before in the 90s with my 95GT 5.0 removed 100% of the exhaust and went long tubes into an X and into two one chamber Flowmasters out with 2.5" pipes and stainless tips.
Changed the 3.27 to 3.73 gears
Let me tell you it was instant FAST and full of
BADASSERY.....the 90s were great for me.