Exhaust options

Hello everyone, il cut it short i have a 06 v6 tundra and want to add a dual exhaust to it. As a custom fabricator / aerospace welder I'm pretty comfortable working with tubes making whatever configuration i desire. However I don’t see a lot of info on v6s could y’all provide me with any recommendations for just better sound, it’s a v6 so I’m not really concerned with power if I wanted power I would have gotten a v8.

 

"Better sound" is highly subjective. I've heard V6 exhausts that I think sound like shit, but the owner loves. What are you trying to achieve? Sounds like you're basically looking for muffler recommendations since you're going to weld it up? Anyway, here's some full systems.
https://www.summitracing.com/search...yota/model/tundra/engine-type/v6/submodel/sr5

 

I recently posted about this similar topic here and the results weren’t exactly what I was hoping for. Mainly because the general opinion is that aftermarket exhausts sound crappy on V6’s. I’m still tossing the idea around myself for my V6 5-speed and am now leaning towards a Flowmaster 50 series delta, which seems to be a moderate sounding exhaust without too much drone. Problem is that YouTube videos don’t give a great portrayal of sound levels, so until I hear one in person, it’s hard to know how they really sound.

 

Link to the thread in question: https://www.tundras.com/threads/flowmaster-on-a-3-4l-v6.153684/

I will say, two things:

Given your V6 was used in other vehicles, like the 4Runner, you may find adaptable options for those, which can be engineered to work, from headers back. Granted, his V6 is a different model than yours, his is the VVTi higher-displacement V6, yours is not.

Given @Oldmantan06 is a fabricator by trade, he'd potentially capable of fabbing something up that would benefit you both; maybe you guys can work out a deal on that, but again, different V6 between your two years, 00-04 were identical, 05-06 was different.

I was hoping to find that Bassani, Gibson, or one of the others sold kits for 1st Gen Tundras, but shy of a Y-pipe-back kit from Gibson for the 4.7L V8, I don't see anything. Magnaflow seems to have some options, but ... market appears limited.

 

LOL I just drive by a taco with a custom exhaust.

VQ's sound better

I mean, maybe make one for better flow? But keep a muffler on there. They sound like every Honda accord ever with an aftermarket exhaust.

 

I have had.... i dunno about 5 vehicles with the 1GR-FE 4.0 engine and i have amassed about.... i dunno 607,000 collective miles it appears with some simple math. I tried exhaust on two of them, in my earlier years. I had a 2006 and a 2008 tacoma and both had the 1GR-FE 4.0 and i can tell you from experience there isnt much you can do to make it sound good. The word good although is subjective, what i think sounds good and what you think sounds good can be two completely different things. I will give you a run-down on what i did.

2006, i bought an MBRP all stainless mandrel cat back dual exhaust. I doubt i can find it anymore but i uploaded vids on youtube of how it sounded back in maybe 2007ish so someone else could hear. This was a deep rumble, relatively quiet, unless you stepped on it BUT the problem was the drone at 2300 on the highway. It was bad and was incredibly awful. I only had it on a few months before i took if off and went back stock.
November 2007 Toyota released the TRD Supercharger and i waited till the day it was available and in December 2007 i ordered the supercharger literally the day the part number was released and the following day went and ordered a new Tacoma TRD Sport double cab (also with the 4.0). That truck came in and i had already amassed a plethora of parts for it. I put Doug Thorley Long tubes on it with the supercharger BUT i left the cats and stock exhaust until my warranty ran out. I did the DTLT because the stock mainfolds were so thin you could hear the valves clattering thru them at idle and i couldnt stand it so i got the dealer to ok long tubes and then put them on to quieten the exhaust valve noise. Well after the warranty was up i went into a deep dive with more parts on the exhaust to look for power and boy did i go down a LONG road and a LOT of money wasted.
I used the MBRP exhaust system off the 2006 and fabbed it up a different way and added a resonator in front of it to hopefully quieten the drone. With the long tubes and one set of cats gone it was awful, sounded terrible. Drone was worse than you could imagine. It was weird, it was louder at 10% throttle on the highway at 75mph than it was at full throttle. Literally made no sense, so i tried something else.
I bought TWO mufflers and a resonator and stacked them.... This sounded even louder, i cant imagine how but it sounded absolutely awful. The mufflers were straight thru 3" but stacking two of them with a resonator i swore they had to be quieter.... NOPE. Then people started speculating it was the odd shape Y pipe so i fabbed up an equal length Y pipe to try to make the harmonics different and WOW this was a massive change in how it sounded but it was NOT quieter. The equal length Y pipe AND the resonator AND two mufflers made the truck scream like a ferrari at WOT, but the drone was close to deafening at part throttle. I literally traded all of that to a guy for a stock exhaust and went back stock.

 

I also have a 2011 4Runner with the 1GR-FE and I haven't even once considered anything other than stock exhaust. I'm a part of 4Runners.com forum, and I can't even count how many owners wanted either the TRD or other aftermarket exhaust only to regret it after install because of the drone. I've seen people wanting to trade straight across their expensive aftermarket or TRD for OEM. Also there's no real performance gain. At least the OP knows this.

 

You just want a louder sound and dual exhaust? An inexpensive way to make it louder is to drill a couple 1" holes in your muffler. As for dual exhaust, just tack weld a dummy exhaust tip (that leads to nowhere) on the left side of the rear bumper. You'll have both the sound and looks of a tuned v8.

 

I have no problems/drone with the borla cat back on our 5th gen

 

The new Borla muffler has really good reviews, i have even thought of building something nice using one of them for my 2UZ-FE in my double cab. Watching videos, listening to sound clips, somehow they seemed to get rid of drone with it. I have looked at cut-aways and all and i think thats the only muffler i would try to use when building an exhaust today. I can tell you from experience, i didnt have luck making mine quiet and there are a few posts a month on the 4R forum with people wanting to get rid of their TRD Pro exhaust and the vast majority are wanting to trade straight even to get a stock exhaust.
The drone is weird how you can be riding down the road at 10% throttle and have 90-110 decibels in the cab but step on the throttle to 30% to speed up and it quieten down to 80 decibels. I cant explain how that engine makes it happen but it does.

 

I have the borla touring? Model I think it was called, installed it in 2016 and never had a drone, or it’s not the same drone I have/had in the truck

 

Borla definitely sells a cat-back kit, shown as "Touring", but it reuses the Y-pipe which is stupid, that looks to be the source of most of the restriction.

When I went to their homepage, they listed one for the 4.7L, and it shows as being compatible with AC/RC/DC: https://www.borla.com/products/toyota-tundra-cat-back-exhaust-system-14854

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Found this @Oldmantan06 , seems impressive. Anyone have any personal experience with AWE performance?

https://awe-tuning.com/products/awe-0fg-exhaust-for-22-toyota-tundra

 

That's for 3rd gen Tundras, are you in the wrong forum?

(This is the 1st gen forum, 2000-2006)

 

Woops, my bad

 

OK, an admission here.
I was browsing through the stickies when I first joined. Saw a thread called '1st Gen Exhaust Clips'. Thought it was about some 'known issue' regarding exhaust mounts on these trucks. Until I opened it.
Some days I am not at my smartest!

 

You’re going to ruin the driveability of your truck with a dual exhaust.

fix the smashed driver mid pipe. Make them both the same length. Put a y pipe in the center of the truck then sweep over to passenger side. Install our 12-24 by 6 muffler on same location as stock. Tie back to stock tailpipe.

Keep all tubing dimension the same as stock. For example. The mid pipes. Keep 2”. Matter of fact, anything before the y pipe needs to be 2”. Anything after the y pipe, 2 3/8”.

Muffler size is based on how loud you want it. Stick to this plan and you get more horsepower. More torque. More low end torque. And better sound.

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