True Dual Exhaust on a 4 Cylinder - What Will it Sound Like? 

I made a video changing the header pairing for the people wondering about that ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-rEDtQp8po84.html X-Pipe: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-uI-Pl7vCQBU.html H-Pipe ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-hVKnvvYLDCE.html True Quad: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-peDOTCkcLJc.html

Bro singlehandedly solved the longstanding "shit box" sound in 3 minutes.

It sounds like a well mixed cross between a Subaru and a bike engine...almost reminiscent of a Group B car. You've unlocked a new setup for 4 bangers that doesn't sound shit.

The fact you made this a less than 3 minute video and got strait to the point makes me wish everyone was like you. You earned a sub todau

I was at the autocross when you ran that car. I think you put on the best show that day!

A little bit Subaru, a little bit Honda magna... neat.

Well dang now I'm super curious what difference an x-pipe would make. It does sound deep, unique and different. I like it.

You take that first comment back! -Every Subaru ever.

I love the “ identifies as a blue door” 😂

I'll be adding an X pipe to see what difference that makes soon, stay tuned.

Dude... that may be the best 4 cylinder exhaust i have EVER heard

I was concerned about my exhaust noise , and was about to give up cars but now youve given me hope for the future 👍

I'm happy that you read the article that said don't do it and it made you want to do it! That sounds great! Your car sounds awesome!

Without a doubt one of the coolest sounding 4 cylinders I've heard. Down low you get a Subaru sort of rumble and up high it sounds like a v4 Honda magna which is one of my all time favorite sounding bikes

Awesome video, straight to the point. I like it. Sounds nice, almost like a boxer engine.

this came up on my recommended and i really like this video style!! great video 🙏🏼

Straight to the point video. I wondered, I welded and I wrecked havoc on my surroundings. Love it

This is the best sounding inline 4 ever Holy shit i want a S2000 with true duals

I did this three years ago with a friend!! We took a 1991 legacy and did a true divorced dual. With 2.5" pipes it sounded just like a V8

OMG. I really thought for the last couple of months about this exact idea! I love subarus and know of the unequal headers sound, and how on some 6 cyl inlines people put 3/3 exhaust headers and thought to myself if with that knowledge I could make my new winter shitbox in the face of an Audi 80 B3 with 1.8 4 banger sound interesting. And here I am getting your video recommended! Thanks for the video, genuinely! 1 left left to know if it's going to sound even better with an X pipe or not. Respect man!

Yeah dual exhaust always sounds nice! This was my expectations, at least so far as getting it to run correctly anyhow. Cool vid!

This actually sounds really pleasant

I’m in love with the guy that made this video

Dude that sounds so sick I love it

Love it! Extremely unique. Great job and thank you for doing something I’ve always wondered and never dared do 🤣

ive got a 2017 toyota 86, modified exhaust. it has a sound like ive never heard before. i bought it as is and im in love with it. whoever owned it before me... props to you man, its beautiful

Your selfless contribution to humanity, in your quest to answer the big questions has left us eternally indebted to you sir, thankyou for your service.. 😆👍.

Nice. I used to have a 2002 SE-R spec V from 2003 to 2008. It was such a fun tossible car. That sound from the true dual exhaust is excellent.

Sounds sweet mate. Nice work.

Would be interesting how the sound changes depending on which cylinders you pair up... 🤔

When I was a kid my dad had a 81 Dodge D50. His buddy that owned a muffler shop built him a set of headers and ran duals with 12" glasspacks out the back. It was ridiculously loud, but I loved it. When I started buying and wrenching on cars in my teens, I bought a 1980 Suburu Wagon and gave it the true dual glasspack treatment. That thing was a blast rowing through the gears.

This sounds really good as is. For a car of that kind, made with simple tools and materials: is freaking AMAZING!

Had an '88 Olds with a quad 4, and no catalytic converter. It actually didnt sound bad. The converters were burned out. Your car sounds really good! Impressive! Love the ending!

I need this for my 04 altima so bad. I just got the dual exhaust rear bumper from the 3.5SE and I’m just now figuring out my exhaust. Thank you for this. You have found the perfect sound.

Fascinating way to get something similar to a Subaru without doing a unequal length headers, definitely going to see if it's possible with my car because UEL headers would have been more of a challenge than this style.

U turned it into the sound of dual cylinder wich i congratulate ur effort ..theory says so also thnx man

That sounds good Probably the best four-cylinder I’ve heard

Bro was thinking the vid had like 1 mil views , me looking and finding out t only got like 600 views 😮😮😮, underrated AF

If you just picked up the merged pipes off the stock manifold, you likely have 360° firing pairs in each pipe. It sounds a little lumpier because they're unequal length between the individual cylinders, and the spacing between the outlets doesn't even those out at all (like an x-pipe would...) The 360 pairing is like Honda's F2 engines from the 1960s and the S800 racer, both had "true dual" exhausts and clips can be found on RU-vid. Pairing the cylinders differently at the manifold / head would yield something closer to a boxer 4 sound, or indeed Honda 4 cylinder motorcyles of the '60s and '70s :)

Hey... nice Senturabu 😂👌 worthy viewing material, nice sense of humour/editing on display.

It really sounds fantastic, what a throaty sound from a 4 cyl, super neat that it sounds a bit like a bike mixed with a subaru

Finally someone did that! I was thinking to do that, but i dont know welding. Would be nice if you had include a comparison of sound difference before and after

That actually sounds way better. A true dual vtech would sound insane.

33 seconds in its already a great video

I think you have just earned a sub.... continue doing stuff like this please

Identifies as a blue door 😂 that won my subscription 👍

I want to do one with 4 individual exhausts that run all the way to the back.

That genuinely sounds really good

Okay, I like that sound. Definitely an improvement.

Out of curiosity, what cylinders did you pair with each other? 1&2 in one pipe 3&4 in another, 1&3 / 4&2, 1&4 / 3&2? All these different combos could make very different sounds when compared, i want to know what you chose to do.

I have been wanting to do this for a few years. My idea is more towards a twin turbo setup though

lovely video, sounds great!

It’s uncanny how different it sounds- and good

I'm impressed, you made that Sentra sound good! Now you need to sell it to all other non-flat, 4 cylinder powered cars and get rid of the failed sneak-fart sounds on the street. You know what I mean, when you need to fart really bad and feel it backing up like your stomach is going to explode but you are with people you don't want to hear it, so you lift and squirm a bit to see if you can slowly and carefully release it and somehow it all goes terribly wrong and you sound like a Honda... Yeah, that sound. :)

There are 3 ways to make a dual-exhaust four-cylinder: 1) pair cyls.1 & 2, then 3 & 4. 2) pair cyls.1 & 3, then 2 & 4. 1) pair cyls.1 & 4, then 2 & 3. Each of the above, sounds rather different. Which option did you use in this vid?

Omg this is awesome it’s not to loud and it sounds great I love it

Sweet! I've been toying this idea in my head for a long time. When making a "true dual" manifold for a single bank engine did you have any troubles with the upstream oxygen sensor properly reading the engine? With a 4-1 or 4-2-1 manifold the o2 is in the collector reading all of the cylinders exhaust and reading it but in a "true dual" setup you'd only be able to read 2 cylinders with the o2 (unless wiring up another o2 for the other 2 cylinders although I'm not sure if that's possible without stock ECU without mixing up the readings). I know like me this was more of letting the intrusive thoughts win type of deal haha but do you know which cylinders are preferred to have the o2s read or it doesn't really matter? I want to do this to my 4 cylinder but I wanted to research exhaust scavenging to get the best performance out of it when making the exhaust runners and take it a step further by creating 2 manifolds to see the differences in sound and power if any. My engine firing order is 1-3-4-2 so I wanted to make one manifold have 1-3 on one side and 4-2 be connected on the other so its two pulses on one exhaust pipe before switching then the other manifold could be 1-4 3-2 so there's one pulse on one pipe then goes to the other pipe one pulse and then goes back etc. Just trying to help make some sound that isn't a fart can :)

The slightly clappy sound could be alleviated by like magnaflows maybe and a resonated tip and x pipe. It helped my m45 which is a v8 nissan basically and them and titans have that cis/ clappy sound and doing what u mentioned above made my car sound great 😊

This sounds actually awesome

This sounds really good, almost like a V4! The motorbike analogy seems to be accurate though.

Not all 4 pots sound the same. Old school (not 90's, but like 50-70's) rally car had some cool sounding 4 cylinders. Also the Cobalt SS and Dodge Neon Srt had some deeper growls.

I really like the rumbling sound of true dual, it reminds me of the V8ish sound you get on old Inline 6s with true dual headers, with X and H pipe this just goes ricey. I'm tempted to have an exhaust like that but on flat plane 4 cylinders firing in pairs there would be a huge mess with the flow so it's going to lose performance for sure, there just isn't anything to pull a vacuum after each pair fires like in a single exhaust which has excellent flow due to each pair's exhaust pulling the other pair's out, not that the pulse from its own exhaust doesn't do it, it just doesn't do it as effectively.

I’ve heard V8s that sound like that so I think it turned out well, nice work

It sounds like a beast , love it !!!

I find it funny that you use a STI to make the dual tip point, after saying all 4 cylinders sound the same. EJ20/25 have a way different sound with a bigger exhaust, mainly due to headers but its still a different sound when just the exhaust is changed

please try swapping the header collectors onto alternating cylinders to see the sound difference

Heck yah dude sounds awesome. Try an uneven header length next!

You sir, have too much time on your hands. Love it. Do more.

Man thats actually pretty nice sounding closest subie sound ive heard but was wondering if you felt like it made any extra power or acceleration?

Lots of older inline 4 motorcycles run dual exhausts like this. Some have an h pipe config, some have them fully seprate. Makes a neat sound!

This has potential to sound amazing

I added an X-pipe to see that that would do: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-uI-Pl7vCQBU.html

Sounds way better than most 4 cylinders. Thank you also for pointing out to the world that a single that splits is not a dual exhaust.

man has never heard another 4 cyl outside of honda and says they are all the same 🤣🤣🤣 hilarious vid bud, best of luck in the future.

That sounds freaking awesome!

Not bad...Nice b13 too. I saw that creeping in the background 😂

Whoa that sounds good man

That actually sounds really good

One thing to say… mission accomplished… proper dual exhaust on a four cylinder engine.

HELL YEAH! I love it!!! Thanks for sharing!

Ooohhh, that is *sweet.* Every 4cyl car should have this setup. Holy crap that's a great sound.

I did this to my 4cylinder, with equal length runner and a center collector for each running side by side and the splitting at the end sounds really good, Borla exhaust for the win

Dang, I'm not a 4 cylinder fan but, It sounds pretty good for a 4 banger. Nice job on your quest.

1:44 That actually sounds nice! Its subtle, deep sound and crisp. im sure adding a resonator like a dynomax would tone it even more.

Dude! Sounds really good. Sounds very similar to a Subie.

Dang, that sounds pretty good!

Sounds exactly as an inline-2! But sounds better than any other L4! Nice!

I’m shooketh. Thou hath made a inlinebaru.

When I first heard it, I got chills and... neuron activation. Sounds awesome!

I've found this video googling the same question. And glad I don't need to test it myself ))

I been thinking of doing this for a while now, thanks for doing it so I can save money lol. Would sound good on my 1.6 Vauxhall clone/Aveo5 lol

Sounds amazing!

Nice job, I like it.

Sounds SICK AF!

Man that sounds good.

I put a long tube header, free, with a straight through cherry bomb type muffler, also free, on a N/A 2.3 87 Mustang 5 speed, and it sounded INCREDIBLE! Seriously reminded me if the Bullitt Mustang. Still slow as molasses.

02 spec v... my first car haha. Thanks for the nolstalgia! Dam car had pretty good torque for a 4 banger, I truly miss it

Definitely a deeper sound than my 1974 Toyota Celica. My Dad and I split the exhaust manifold back in 1985 to see how different it sounded compared to his 1952 Chevy straight Six. They were close but my Celica had a higher pitch. We ran straight pipes to the back wheels then had 18" Cherry Bombs with chrome tips. Kind of like a High Powered Weed Eater. LOL. Great to see someone doing a True Dual again.

Thanks for getting straight to the video

Sounds like a cross between a bike and a Subie. I love it.