Engine sound for below

[MarceloDV]

Hello everybody. Am new here, am i just bought a second hand Ford Raptor 2018 with 18k. The previous owner made some modifications, mostly lights instalations that i take them out. But also, he installed a "Cut Out" (Or something like that i think it's called) to change the sound of the exhaust that was activated with a small remote control. I take that out too cutting the exhaust pipe and replacing a section. But now, i hear a weird noise of the engine. I can hear it inside, an today i record the sound from below and it sounds like the attached file. The sound does not start when i just turn on the truck, it starts later before, when i have traveled a certain distance at a certain speed.
I will take it to the dealership but first i wanted to know if anyone can guide me what it can be or where i can check. I haven't been able to check the truck yet since i had to travel for work.
Thanks in advance.

 

[CoronaRaptor]

Welcome to the place. It almost sounds like an exhaust leak, could be the wastegate rattle that others have mentioned, really hard to tell. Post a pic of your Raptor in the "New member area" and let us know here what the dealer says or does. Good luck.

 

[MarceloDV]

Thanks for the answer. I will put the pictures right now. I think is something about the exhaust too. hard to tell. Hope the dealership not try to scam me. But is weird. The worst thing is that that i can´t concentrate on work until i know what the sound is jajaja

 

[Skubik]

I wasn't able to open up the sound file.
I hope you get more responses and hopefully saves you a trip to the dealership.