Tundra Factory Muffler

[blackbeauty]

Just thought I would post a couple cut-away pictures of a stock factory muffler that I found on another forum so everyone can see what it's insides look like.

[mxsjw]

Thanks for posting that. They didn't happen to have a cut away of the TRD Dual muffler did they?

[blackbeauty]

No. sorry. Maybe Zoomers has one of those. They were actually who posted these pictures originally. From what was described to me, the TRD muffler sounded similar to a Magnaflow in design with 2 perforated tubes straight thru wrapped in stainless steel packing.

[willy]

It's too cold for me to go outside and look for myself, so...what's that side pipe coming off it connect to?

[07rcsb5.7]

I have been waiting for a cutaway of the stock muffler, thanks!

[blackbeauty]

That pipe isn't connect to the muffler, it's just something the muffler is laying on.

[wells service]

Didn't I read in toyota literature that they make the short side pipe after it goes into the muffler longer to make it a tuned equal length system? these pictures do not show this.

[Burger Steak & Eggs]

I read that also, but no sign of it in those photos. Looks like an average baffling system to me, no extras at all.

[OTR]

So, do they pack the muffler with fiberglass material or stainless for sound dampaning?

[dariusld]

That looks really restrictive to me.

[blackbeauty]

Originally Posted by dariusld

That looks really restrictive to me.

Ya, but that's pretty much the norm when it comes to stock mufflers. Apparently the 5.7 seems to like though, based on it's torque output.

[5.7texan]

Originally Posted by blackbeauty

Ya, but that's pretty much the norm when it comes to stock mufflers. Apparently the 5.7 seems to like though, based on it's torque output.

if thats the case im just going to keep the same plumbing and just do a muffler swapout with a mbrp.

[TRDSucker]

That is the biggest "turbo muffler" I've ever seen. Well a more restrictive version, but same idea.

[blackbeauty]

Originally Posted by 5.7texan

if thats the case im just going to keep the same plumbing and just do a muffler swapout with a mbrp.

I think that's the best way to go personally with whatever muffler you like. Then possibly installing some sort of aftermarket resonator if there is too much drone inside the cab for your liking.

When it comes to truck engines, torque is of first importance, horsepower second and that's why I really see no advantage in installing a catback for most people who use their truck for daily commuting. The larger piping only increases power in the higher RPM's while at the same time the power in the low range suffers. And that is where the power is needed most on a truck.

[TRDSucker]

Originally Posted by blackbeauty

I think that's the best way to go personally with whatever muffler you like. Then possibly installing some sort of aftermarket resonator if there is too much drone inside the cab for your liking.

When it comes to truck engines, torque is of first importance, horsepower second and that's why I really see no advantage in installing a catback for most people who use their truck for daily commuting. The larger piping only increases power in the higher RPM's while at the same time the power in the low range suffers. And that is where the power is needed most on a truck.

Agreed. Everytime I've installed a cat-back, the low-end seemed to suffer, but in the top half of the tach, it was goooooood!! For the majority of the truck owners around, if it sounds good, it is making more power. Sound really alters the ole butt dyno. Another side effect is worse city mileage due to the loss of low-end torque, which is usually compensated for by giving a little more on the loud pedal. Well that and opening her up to let her roarrrrrrrrrrrrrrrrrrrr!!!!!!!!!!!!!!