I have to say that the guys at Johnny Franklins Muffler Shop in San Rafael, are hands down number one,when it comes to knowing the types of Mufflers/ Catalytic Converters best suited for your car,truck,SUV,and Hot Rods! They are the only shop I go to for any chassis,and exhaust work. The manager,and I believe one of the owners Don, is up front with you and the best thing is, you can trust him and his crew! You get more for your money,and no matter what the job, it is done quickly,and with American- know -how! You won't worry about going back because something went wrong with their work, but you will be bringing your other vehicles to them when the time comes for new mufflers!😎
Idk man did you see out out of whack that first cars pipes were setup? Maybe they put a new guy on that job…..Fortunately most will never see the workmanship or lack of but still the installer prob had to learn how to sleep again
Dual exhaust doesn’t increase mpg. You burn more fuel than with single exhaust. The reason is, people drive harder because they want to hear the exhaust.
False. Pre 1975 vehicles will increase about 2mpg. Modern vehicles increase 0 to 2 mpg. People need to do a driving modification on themselves if they are having a heavy foot.
Have someone rev the engine and check the other exit, nissan has mufflers like that, its done intentionally to help low end torque then at higher engine speeds the pressure of the exhaust opens up the second exit helping on the high end
1974 Dodge full size van I had a true 2 inch dual exhaust with thrush turbo mufflers nothing else exited out in front of the rear tires never had no drone noise inside the van ever was not loud was a nice mellow low Rumble headed that way since 1983
Good explanation. I have a true dual set up on my '06 Mercedes CLS 500 & will be doing away with the centre resonator that the two pipes run into & out of & in it's place just running two straight pipes out to the rear mufflers. There is a small cross over tube inside the resonator that will be got rid of, I want more of the 'blat' that you get without the H-pipe or X-pipe & will hopefully give more of the old school muscle car sound that I'm after, the lovely throbby, woofly V8 sound.
if your car has 1 exhaust then stick with it only add other exhaust pipes if u want to lower the sound >>> every time gas,s bounce back or directed through 180 degrease the sound levels by half
Jewelry? No, It's function my friends. And my 1960 Buicks all had factory full dual exhaust, blending both pipes into a mixing resonator/muffler right in front of the fuel tank and then dual back out.
+OddTimeMan I believe he means resonator..... Use actual mufflers. Resonators are just for making noise, and are really annoying to everybody both inside & outside the car, particularly on small motors
@@Instrumentator23 Your old glasspack probably had no fiberglass left, the cheaper glasspacks have fiberglass that burns away (maybe after a month with higher running temp EFI engines and with cats than burn very hot, but might take a year or more with catless exhausts). The Dynomax Bullet does well at resisting burning away even on newer cars/trucks. Other factors may be your new exhaust is smaller pipe diameter, you might not have exhaust tips which act like a megaphone and amplify the volume, and your Bullets might be the longer case mufflers and your old single glasspack might've been a little 8" shorty case.
@@AdmiralRustyShackleford Preciate it, the bullets i put on were shorter than the single glasspack i had and tips stayed exactly the same as well as the pipe diameter. I wound up changing everything again because i didn’t like it and got it to where i was more than happy with it.
There's no performance to be gained with dual mufflers, and depending on what you use, you may lose a tiny little bit. Also two mufflers is heavier, obviously. Another 10-15lbs. NBD tho. The advantage to multiple mufflers is purely sound control, be it to make it deeper sounding, change the tone a little, or simply reduce overall volume, especially inside the vehicle. Obviously running 2 mufflers is quieter than 1 muffler of the same type, but 2 also tends to be deeper sounding. Also, having multiple mufflers (2 on a single, 4 on a true dual, or 3 like this) cuts down on interior noise especially. Every inch of exhaust tubing from a sound changer (header/manifold collector, cat, but mostly the muffler(s), etc) is a resonation tube. After about 2-3' of pipe is when it gets particularly droney. I have a video on my page showing just how quiet it is in my truck when I put the mufflers all the way at the very back of the bed compared to the typical location of before the rear axle. Quite a bit quieter inside, slightly quieter outside. Perfect for a daily... But I don't mind the noise, so I put it back in factory location when I got rear ended. Hope that answers your questions
You missed a crucial system of an exhaust system... Back pressure which helps close the exhaust valves!?? Without it and OEM valve springs... you just burned a valve. Be more responsible, Please... ASE CMAT
I have to say that the guys at Johnny Franklins Muffler Shop in San Rafael, are hands down number one,when it comes to knowing the types of Mufflers/ Catalytic Converters best suited for your car,truck,SUV,and Hot Rods! They are the only shop I go to for any chassis,and exhaust work. The manager,and I believe one of the owners Don, is up front with you and the best thing is, you can trust him and his crew! You get more for your money,and no matter what the job, it is done quickly,and with American- know -how! You won't worry about going back because something went wrong with their work, but you will be bringing your other vehicles to them when the time comes for new mufflers!😎
Idk man did you see out out of whack that first cars pipes were setup? Maybe they put a new guy on that job…..Fortunately most will never see the workmanship or lack of but still the installer prob had to learn how to sleep again
Dual exhaust doesn’t increase mpg. You burn more fuel than with single exhaust. The reason is, people drive harder because they want to hear the exhaust.
True
False. Pre 1975 vehicles will increase about 2mpg. Modern vehicles increase 0 to 2 mpg. People need to do a driving modification on themselves if they are having a heavy foot.
@@enriqueb4412 Who told you that lie about pre 1975 car will get 2 mpg better? I bet you have never driven a 1974 anything.
My 2016 Kia Optima has one of those fake dual exhausts. Smoke only comes out of one which is normal, looks better than just having one though.
Have someone rev the engine and check the other exit, nissan has mufflers like that, its done intentionally to help low end torque then at higher engine speeds the pressure of the exhaust opens up the second exit helping on the high end
@@ivanguerrero2014 that’s entirely false lol it’s still a single exit before the double it can’t physically free up anything lol
@@mercury0214 nope you know nothing. These are true open dual exhausts especially on the vq35 engines.
1974 Dodge full size van I had a true 2 inch dual exhaust with thrush turbo mufflers nothing else exited out in front of the rear tires never had no drone noise inside the van ever was not loud was a nice mellow low Rumble headed that way since 1983
What if you car has a dual system as far back as the muffler then becomes a single pipe? Would changing it to dual mufflers improve power or economy?
Good explanation. I have a true dual set up on my '06 Mercedes CLS 500 & will be doing away with the centre resonator that the two pipes run into & out of & in it's place just running two straight pipes out to the rear mufflers. There is a small cross over tube inside the resonator that will be got rid of, I want more of the 'blat' that you get without the H-pipe or X-pipe & will hopefully give more of the old school muscle car sound that I'm after, the lovely throbby, woofly V8 sound.
I want dual exhaust on my Daewoo Matiz 2
So lance Armstrong is doing exhaust now?
the longest exhaust commercial i have ever seen
I want dual exhaust in my Tesla!!
Ghast Unity please tell me this is a joke 😂
You can't it's electric or maybe you can.
I would love to convert my 2004 Mazda 6s 3.0L V6 to true dual exhaust.
if your car has 1 exhaust then stick with it only add other exhaust pipes if u want to lower the sound >>> every time gas,s bounce back or directed through 180 degrease the sound levels by half
thanks for the video
They should have addressed the exhaust manifold more and the significant power or breathing a set of headers can bring.
Question, when dualling an exhaust, do you need to add oxygen sensors to both sides or can it be monitored on one side only?
Both for cat monitoring, single for A/F is fine
If your looking to just run the motor, but if you want to monitor lean/ rich conditions and ease diagnosing I'd go both
I want true dual exhaust with quad tips on my Prius 😂😂😂🙊
Jewelry? No, It's function my friends. And my 1960 Buicks all had factory full dual exhaust, blending both pipes into a mixing resonator/muffler right in front of the fuel tank and then dual back out.
@simraman - i also own a k series vtec 2.4 honda... I'm pretty sure what the s2000 is all about.. I don't like it! The other half uses it!
You da man Cooley!!
So eliminate the equalizer pipe, any significant difference?
Looks like a late 60's Cougar. Taillights are the tell.
Should I put dual exhaust in a crown vic
Well to be on the legal side Ima do a catback dual
not a venturi effect at all, it simply blends at the h pipe. The correct tube size allows volumetric efficiency
Can it be done to a 1998 Toyota Camry LE
Why have a muffler glass pack if it's free flow anyways ? Want to fo it to myv6 Mercedes my drone is horrible took off muffler
Is dat da dude from Miami vice ?
I wonder if mister Cooley speaks like that when he's on "casual mode", like at a bar, does he speak that way with his buddies?! :)
Why not use louvered cored resantor? Is it better then louvered-core resantor
+Arturo Garcia What is a resantor?
+OddTimeMan I believe he means resonator..... Use actual mufflers. Resonators are just for making noise, and are really annoying to everybody both inside & outside the car, particularly on small motors
So inline engines really can't have true duals
They can, if you isolate halft of the cylinders with their own exhaust manifolds :P
TheRealestEver the i6 in my jeep has a 2 piece manifold. each manifold handles 3 cylinders and then goes into a y-pipe
DIDN'T NEED THE MUSIC DID YOU?
I put duals on my truck and it got way quieter. I think im the only person in history to get quieter going duals than with my single setup....
Maybe you got quieter mufflers on it? That's probably the only thing I can think of that would quieten it down.
@@ElMaximoBango Went from 1 glasspack to 2 dynomax bullets.
@@Instrumentator23 Your old glasspack probably had no fiberglass left, the cheaper glasspacks have fiberglass that burns away (maybe after a month with higher running temp EFI engines and with cats than burn very hot, but might take a year or more with catless exhausts).
The Dynomax Bullet does well at resisting burning away even on newer cars/trucks. Other factors may be your new exhaust is smaller pipe diameter, you might not have exhaust tips which act like a megaphone and amplify the volume, and your Bullets might be the longer case mufflers and your old single glasspack might've been a little 8" shorty case.
@@AdmiralRustyShackleford Preciate it, the bullets i put on were shorter than the single glasspack i had and tips stayed exactly the same as well as the pipe diameter. I wound up changing everything again because i didn’t like it and got it to where i was more than happy with it.
twice-pipes
my Ford Capri has headers and true dual exhausts from the factory
+FordCapri Driver
what year is it?
'75 , all European 3.0 Capris had them
FordCapri Driver
cool!
Ricer owners= can't afford to feed a real cars drinking habit
1700iDiGuy wait what my 2 litre used more fuel then my 6 litre v8
V8 or V2 engine with a true dual exhaust without crossover.
Don’t want anything else.
0 data to back anything up.. great.
When CNET was cool
I have a nice Flowmaster on mine and simply changing over to that makes it sound pretty badd azz and maybe 5-10 extra HP
Hate seeing all these maximas and Altima’s with dual and or even quad
Man I came across this video searching "True octo exhaust" I was hoping someone out there has done it, but alas I haven't seen it.
2:17 chrome makes it go faster....right?
2:44 "classic low rider sound?"
Well it's just an opinion to me. Just because he owns a muffler shop does not mean he knows if there is any benefit of having a dual muffler or not
i was thinking about taking my car to him i work literally down the street but after this video im just going to buy a custom axle back
There's no performance to be gained with dual mufflers, and depending on what you use, you may lose a tiny little bit. Also two mufflers is heavier, obviously. Another 10-15lbs. NBD tho. The advantage to multiple mufflers is purely sound control, be it to make it deeper sounding, change the tone a little, or simply reduce overall volume, especially inside the vehicle. Obviously running 2 mufflers is quieter than 1 muffler of the same type, but 2 also tends to be deeper sounding. Also, having multiple mufflers (2 on a single, 4 on a true dual, or 3 like this) cuts down on interior noise especially. Every inch of exhaust tubing from a sound changer (header/manifold collector, cat, but mostly the muffler(s), etc) is a resonation tube. After about 2-3' of pipe is when it gets particularly droney. I have a video on my page showing just how quiet it is in my truck when I put the mufflers all the way at the very back of the bed compared to the typical location of before the rear axle. Quite a bit quieter inside, slightly quieter outside. Perfect for a daily... But I don't mind the noise, so I put it back in factory location when I got rear ended. Hope that answers your questions
"Except no catalytic converters, hehehehehe"
What's wrong with "the low rider sound"? Low riders are made for crusing and not speed. That sound goes with the looks of a low rider.
It would be interesting to see how the exhaust on EVs (Electric Cars) work... Maybe do a video on that. (wink)
Dual exhaust makes huge horsepower gains on every car because if it's louder it's faster.
False
Ty _ we call that "SARCASM"
You missed a crucial system of an exhaust system... Back pressure which helps close the exhaust valves!?? Without it and OEM valve springs... you just burned a valve. Be more responsible, Please... ASE CMAT
No catalyst!! What happens to all those particles that kill thousand people every year?
Don't dare saying firs*
mustang gt = true duel exhaust haha
fake duals are so 🌽. it's extra money, extra weight for nothing more than looks
FIRST :D
makes me laugh when little shitty 1.8 liter 'sports' hatch have 'dual' exhaust...go away and come back with a real car..
1700iDiGuy So, what do you call a real car?
Anything with 6 cylinders or more.
1700iDiGuy Why?
Why? A 4 cylinder can crush a 6 many times. Or tho if you did the same with the six cylinder it would still be better.
1700iDiGuy i have a 5 cylinder car :0