Lethal H-pipe drone issue

[Evolvd]

Curious if anyone else has the Lethal H pipe and is experiencing drone with it? I get drone between 1500-1600 rpm and it’s quite pronounced. It’s annoying enough that I put the car into manual and up or downshift.
I’ve also notice a warble drone, in which holding a steady RPM I’ll get a drone that comes and goes at random. Not sure what that’s about.
I didn’t notice any issues after it was first installed so I suppose I should get under the car and make sure the welds are all good and no leaks are happening cause this thing is now resonating the body panels in the car when it drones. @LethalBlake @LethalPerformance

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[Mspider]

Which mode is your exhaust set in?

 

[Evolvd]

Which mode is your exhaust set in?

It does it in all modes.

 

[silverbullet85]

Look underneath maybe a clamp is touching the body underneath

 

[K4fxd]

Are your tips flush with the bumper cover?

Mine droned until I extended the tips about 2 inches out from the cover.

 

[Jmeo]

I am not experiencing any drone. Tuned in to what you find out.

 

[Evolvd]

Look underneath maybe a clamp is touching the body underneath

The h-pipe is welded onto the rear section but I’ll take a look at the front connection.

Are your tips flush with the bumper cover?

Mine droned until I extended the tips about 2 inches out from the cover.

Mine are slightly extended from the bumper cover.

 

[oregongt350]

No judgement here, but it amazes me, I’m a old fart I can’t imagine making one of these louder than they already are. !!!! My GT350 sent me to the audiologist with ringing in my ears, no joke.

 

[Evolvd]

No judgement here, but it amazes me, I’m a old fart I can’t imagine making one of these louder than they already are. !!!! My GT350 sent me to the audiologist with ringing in my ears, no joke.

The goal wasn’t to be louder, just to change the tone. I don’t ride around in track mode all the time lol

 

[kilobravo]

Me thinks the sound is about harmonics and at right around two thousand RPM, they all seem to add up to "the drone." It isn't noticeable if you rev right through the range but, if you hang there, at least on my girl, (X pipe) you get the unwanted sound.

 

[Mikepol2]

Seems like any X or H will drone around 2K RPM, I hate that "boomy" sound and yes with tinnitus the drone is horrible! My solution... one Vibrant resonator in the drivers side of a Summit H. Still keeps the volume but cuts down on the boom.

 

[Coastal-Mach]

Seems like any X or H will drone around 2K RPM, I hate that "boomy" sound and yes with tinnitus the drone is horrible! My solution... one Vibrant resonator in the drivers side of a Summit H. Still keeps the volume but cuts down on the boom.

Mike, do you have any sound clips with this setup?

 

[Excelerater]

what muffler are you running and what size?

 

[Mikepol2]

Mike, do you have any sound clips with this setup?

what muffler are you running and what size?

Stock active exhaust. Startup in normal mode, switching to track and then quiet with little throttle blips.

 

[Excelerater]

Stock active exhaust. Startup in normal mode, switching to track and then quiet with little throttle blips.

That is a nice ride.

You changed the design of the OEM excust by adding the H pipe?
You arent the OP so im confused now

Gt350s and 500s come with H pipes,my ride also has an H pipe (no drone)im surprised
the MACH1 does not have one from the factory

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