Remove Exhaust Drone PERFECTLY + Free Drone Tool

I have a question for you. On your calculator page you are shown PPR for different engines. I have a weird one for you. This is a twin cylinder 4 stroke and both pistons fire at the same time. In this case would the PPR be 1, 1/2, or something different?? What this is, Is a turbocharged snowmobile that i have a tune on sitting at 260HP. I am running a full 3" exhaust but the drone will drive you batty at 5300 Rpm's.

I was just looking for the drone solutions, and I’ve found it here, and even for the same car! I have cat back 2.5” Magnaflow Y pipe Thanks, I have to try to fix it same way.

How do you know what size pipe to use? I'm going to do this on a 22re with 2.25 exhaust. Not sure whether to use the same size or smaller

Heey man quick unrelated question, I have almost exactly the same setup, and when it’s cold out I get condensation fumes which is normal, but only from the drivers side and it’s driving me crazy, do you know why that would be

Should the diameter of the drone pipe match the diameter of the exhaust system?

Hello, you can help me ? I dont know How is my exhaust temperature, but i have a rta and my drone frequency is 67hz, you can calculate my j pipe lenght ?

Ps. Is a 4 cylinder 4 Stroke engine


Thanks

So basically it's the same principle as a tuned expansion chamber on a 2 stroke engine. The combustion pulses, ie. sound waves, reflects back to the engine. In a 2 stroke engine it increases the pressure in the cylinder. In this case it cancels the sound or drone that you tune the system to. Interesting.

I'm buying a Greddy muffler for my 2022 XSE Corolla Hatchback 6MT, and I want to make sure there is exactly zero drone because I use this car for ride sharing.

I want the sound that is missing from the 6MT driving experience without putting a metric fuck ton of exhaust drone in the car because that will not only ruin my driving experience, but it'll also ruin my customers experience as a passenger in my car.

For the record, the engine is a 2.0liter 4 cylinder, and I'm still deciding between a single exit with a Greddy Revolution RS muffler, OR, replace the fake dual exhaust tips with real dual exhaust tips, making use of TWO Greddy Revolution RS mufflers. If I do the "Honda S2000" thing and go for the real dual exit exhaust, would that be louder, or quieter than a single exit exhaust?

I'm sure I could just look this stuff up and try my luck on forums or website FAQs, but what I've found so far doesn't really answer my questions.

Next time show us someone actually doing the work… you embarrassed to show your welding techniques?

Killed the drone... but did it kill the horse power? I just built my S70 t5M fitted with a V-Band Hot side so I need to build my exhaust from scratch. I'm going to use your guidance but i only worry about how it will effect the power.

Impressive. Crap, now I have to buy a welder.
Right to the point.
GREAT JOB FELLAS!

Awesome video. I want to do this on my z3. Does it work on a small spectrum ex: 80hz-120hz? How wide is the frequency range it cancels? Thanks!

hey man, great vid! I think most people mention welding the pipe early in the exhaust flow but was wondering if you had any thoughts if there's a resonator? should it be welded after the resonator before exiting? thanks!

Helmholtz resonator I was shown this years ago and it WORKS as long as done right

What about for a true dual exhaust system? Same thing i assume?

Thank you! If I can't fit a 40" pipe under my car easily do you think using exactly half the recommended length will be worth trying to at least improve it? From my understanding of sound and instruments, half the length should be an octave higher and still resonate with the drone frequency.

I have a lot of questions LOL

- can you put the pipe anywhere?
- instead of 1 long pipe, can you split it into two small ones?
- Is it better to have two j pipes?
- does making the j pipe longer better or does it have to be the exact size?
- does the pipe have to match with the stock exhaust pipe size?
- what if drone occurs at different RPMs? For the calculations, do I put peak value when drone is more annoying?
- are there any other solutions to lowering drone besides installing a j pipe? would sound dampening panels inside help too?

Great vid! Can you explain how did you exactly get the temperature reading?

Hi. Ive got a straight-through muffler on my car just behind the bumper. I welded a j-pipe before just before the muffler where there was barely enough room. It has definitely reduced the drone, but not eliminated it. Would it make any difference if the drone pipe was welded after the muffler i.e a few inches before the exhaust tip opening? There is only about 4 inches of pipe for the exhaust tip, so not much space.

Nice Job :)

What options are for drone in two spots 2100rpm is worst and 3000 rpm at more rpm calculator asks for shorter pipe and at lower it needs longer pipe...its a 6 cyl bmw engine if it makes sense tnx for any information will be apriciated!👍

This is cool. I have a friend with an annoying exhaust, gonna have to share it with him

can you add multiple pipes?

Thanks man for your efforts. but I have a question before I start the work, you know ls430 have 2 pipes and 2 mufflers I remove them all. I do the calculation as 4 stroke 8cyl I got the results of the pipe length, I have to add the pipe to each of the pipes!?

Hi. I have a 2.5T Mondeo. 5 cylinder Volvo engine. I have installed a straight flow silencer and a straight flow rear muffler. When I'm on a constant cruising speed there is no drone but in the moment I'm accelerating (under engine load) OR I let the gas off and the car start to slow down, the drone start. Kind of every RPM range. What do you recommend in this case?

That guy's sound so good you guys definitely have a sleeper on your hands love it bro sweet 👍👌🤙🔥✌😎

In a 8 cyl with dual exhaust, would you cut the measurement in half and do it to both sides ? i am getting 28 inches so it would be 14inches on both sides?

You can make a J bend in the pipe. Same result if the length is the same.

Does it matter what diameter the drone pipe needs to be?

how about tube diameter? Same as the exhaust? I´ve seen recomendations for smaller diameter tubes

I have 3" exhaust .. Would I build the drone pipe the same size or can I use a smaller one? Great Video by the way :)

nice c30! I'm doing this on my 300zx but I'm a bit of a volvo guy myself :)

Since I got two exhaust pipes do I need two of them?

Quick question and i know this is an old video too but is this essentially what AWE does for their drone cancelling technology?

Got To Give This A Try. Hopefully I Have Enough Room I've Got A Single 4" Exhaust.

if you take temperature readings in diff temperatures even tho the exhaust is warmed up, will it reduce the effectiveness of the drone pipe?

What if it is a 6 cylinder with dual exhaust where each pipe has 3 cylinders? Do I just mark a 3 cylinder and make two of these? Is using 400 degrees Fahrenheit ok or should I use something to measure accurately?

I made a straight thru drone free muffler. I had the same exited feeling when it worked.

Good on you for making a point about PPE, it’s all fun and games until you have a 2mm and a 3.5mm burr of steel getting pulled out of your eyes with a needle fully awake.

How do you know what diameter pipe to use?

So random question.. did you by chance weigh the pipe you added? Always so curious about how much weight it is adding.

Did you notice it actually making the drone at other rpms worse than it was before? I targeted 2500, and at 2100+ the car sounds amazing, but now from 1500-2000ish it drones more than it did before. Not sure if maybe my length or something else was wrong? Any help would be appreciated.

the temperature can i refer to the water temp?

Mine didn't work at all.. 1600 rpm v8 dual pipes with a H pipe. Used the same diameter tube, calculated 900mm or 35.7", I didn't measure exhaust temp though. Guessed 200f/95c because I read on a forum someone calculated that temp inside the j pipe. Mine are welded in front of the mufflers, about under the front seat in my C10 truck

Had my J pipes installed using your video. 65 Ford Ranchero, dual exhaust, flowmasters. Well it worked! I was laughing the first test ride just like you guys did. It works!! Thank you! 🤙

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