Automatic Quiet Mode Start not working

[Wraith6668]

I replaced the resonator with this, car had excellent tone and was able to now have true 3” into the res with no neck down.

game changer for me

Thanks for the info, I'll go look at it

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[Alan Applegate]

Seems like I'm always stealing a thread, but I'm reminded....

I forgot to put up my trash can yesterday (the truck came after 7:30 pm!). As my Eco-Boost was idling in my driveway, I walked behind the car to get the trash can. Cheese Whiz Batman, the damn thing is noisy! Maybe I should have ordered the exhaust upgrade!

 

[Will2]

Seems like I'm always stealing a thread, but I'm reminded....

I forgot to put up my trash can yesterday (the truck came after 7:30 pm!). As my Eco-Boost was idling in my driveway, I walked behind the car to get the trash can. Cheese Whiz Batman, the damn thing is noisy! Maybe I should have ordered the exhaust upgrade!

One change I do like about the S650 Ecoboosts is that Ford improved the exhaust significantly vs S550. Both in tone (lower, gruntier) and according to some experts it's more of a "performance exhaust" setup from the factory.

As far as quiet starts, I dont' think you can start with valves fully closed due to something about the catalytic converters, so that's probably why people are finding it's loud for a little bit before it switches into "quiet mode".

 

[Wraith6668]

One change I do like about the S650 Ecoboosts is that Ford improved the exhaust significantly vs S550. Both in tone (lower, gruntier) and according to some experts it's more of a "performance exhaust" setup from the factory.

As far as quiet starts, I dont' think you can start with valves fully closed due to something about the catalytic converters, so that's probably why people are finding it's loud for a little bit before it switches into "quiet mode".

I tried it out and just started it and it did start in quiet mode. I guess it shows normal until I actually start the car then switched instantaneously. I never looked before because I wasn't as concerned as now with the headers. So I guess there was no issue it just doesn't show quiet mode until car starts. Thanks everyone and sorry if I wasted anyone's time. Your input is appreciated

 

[IFFV68]

I think it actually starts in normal mode and then switches to quiet mode in a few seconds.

I believe it takes something like around 45 Seconds?

 

[MCS]

Sorry for the delay. I just went outside and fired the car up in the garage since it has been about 3-4 weeks since it was fired up in storage.

The S650 revs pretty loud and high while it's warming up. Having catless LTH and a midpipe you might as well not have quiet mode.

I only have an H pipe (Whipple not coming until April 21st) and it does sound pretty loud, even when I force the exhaust into quiet mode to start it.

 

[D/\rK•650]

I did the Lethal/Kooks Catless LT's and those first 30seconds of a cold start are BRUTAL.

I've measured +115db 10ft behind my car.

I'm going to add a couple resonators to quieten it down and deepen the tone.

Dude holy macaroni!!! That is LOOOUUUDD!!

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