Sound difference on pump gas vs E85?

[sms2022]

So I added the vibrant resonators to the back of my x pipe yesterday. It’s still louder than I’d like but the tone is improved 100% and the rasp is gone.

i also Dynamatted the hell out of the shifter bracket and any exposed spot of the floor pan near the exhaust which has made the inside of the car virtually silent.

overall I’m happy with it. My fiance would probably still like it quieter so it didn’t wake her up in the morning starting up in the garage but oh well. Lol.

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[NGOT8R]

So I added the vibrant resonators to the back of my x pipe yesterday. It’s still louder than I’d like but the tone is improved 100% and the rasp is gone.

i also Dynamatted the hell out of the shifter bracket and any exposed spot of the floor pan near the exhaust which has made the inside of the car virtually silent.

overall I’m happy with it. My fiance would probably still like it quieter so it didn’t wake her up in the morning starting up in the garage but oh well. Lol.

Got any pics and sound clips of the resonators installed?

 

[sms2022]

Got any pics and sound clips of the resonators installed?

No pics. They tuck up real cleanly on the back of the x pipe. I had the ford performance x pipe butted right up against my exhaust so I just cut off the last 9” or so of the xpipe. The resonators are 12” and 2.5. They slide right over the xpipe and factory exhaust. I put the clamps on with an impact to form them to the pipes and the system is rock solid.

I’ll grab an exhaust vid when I leave lunch.

 

[NGOT8R]

Do you feel like it toned down the exhaust note some? I have the Vibrant mini race mufflers welded into the mid pipes for my headers and they didn’t do much to tone it down.

I was wondering if the resonators would help a bit. Are the ones that you have polished version?

 

[sms2022]

Do you feel like it toned down the exhaust note some? I have the Vibrant mini race mufflers welded into the mid pipes for my headers and they didn’t do much to tone it down.

I was wondering if the resonators would help a bit. Are the ones that you have polished version?

This is the part number from summit
VPE-1792

It definitely toned it down and took the sharpness out of the tone until above 4500rpm. Before I’d keep it under 2500rpm daily driving to keep it from trumpeting.

in terms of actually making it quieter, I just drove it about 60 miles and once they got hot it got a good deal quieter. Probably about 5db. Normal mode now sounds a lot like sport mode did with the factory exhaust. Track mode is still loud as hell.

if I did it again I’d probably go with a longer resonator, maybe the 14 or 16” version.

 

[NGOT8R]

I was looking at other options to control the tone and saw that there is a muffler wrap that’s supposed to help as well. YT also shows a guy using exhaust wrap around his mufflers to tone things down. The muffler blanket wrap kit looks cleaner though.

 

[sms2022]

I was looking at other options to control the tone and saw that there is a muffler wrap that’s supposed to help as well. YT also shows a guy using exhaust wrap around his mufflers to tone things down. The muffler blanket wrap kit looks cleaner though.

The Dynamat on the bottom of the car helps a lot too. I was actually thinking about dynamatting the exhaust for half a second before realizing that’s a stupid idea and it will burn. But exhaust wrap by the trans and diff is the next mod I’ll do.

 

[NGOT8R]

Here’s the blanket wrap I was referencing.

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[sms2022]

Got any pics and sound clips of the resonators installed?

Let’s see if I can make this work…

video is:
startup & idle: 1. normal high idle 2. quiet right when it settles into low idle 3. normal/sport/track (all the same).
Revs (quiet, normal, sport, track).

you can’t really hear the decibel difference on video but quiet mode drops the tone and the noise by a lot.

Edit: YouTube to video

 

[NGOT8R]

Pics look good! Nice job on the install. Sending PM now.

 

[NGOT8R]

Sounds throaty. Do you think the 14-16” resonators would fit? I’m thinking that’s probably what I’d need to get any type of reduction in sound. Might even need to wrap the mufflers too.

 

[sms2022]

Sounds throaty. Do you think the 14-16” resonators would fit? I’m thinking that’s probably what I’d need to get any type of reduction in sound. Might even need to wrap the mufflers too.

I think they would. Look at how much space I still have on the back end of the x pipe. That’s what I’d go with if I did it again. Just chop off more x pipe obviously.
Quiet mode is really quiet, my phone mic doesn’t make it sound any different but it is much quieter, but I wish normal mode was a little quieter.

 

[sms2022]

Couple sound clips for you guys:

 

[sms2022]

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