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Well- it’s been awhile and just realized what I typed. I actually used an AutoSpring rear 2” block to replace the factory 1 1/4”. So raised the rear 3/4”.

Sounds great! I’m a big MBRP fan. In my case, I decided to test the “race” designation on their 4” system. Well- they nailed it. It is a deep, feel it in your chest exhaust note. Wide open is just insane. Forget letting cylinder deactivation kick in. It’s obvious. Really obvious. I use tow mode...

Ford replaced the transmission and torque converter in my 21 5.0 truck. After three attempts at replicating it, I finally had a cold snap where I had the dealer park it on a lift (elevated) overnight. I asked them to stand under the truck and remote start it. Next thing I know the service...

It’s an after axle- same location as stock

I like your user name. I traded a 2018 F250 for this truck and I really do miss it. I’ll have another. Story for another time. Anyway- I’ve added a 4” MBRP exhaust and it completely drowns out the noise. I tried posting a video on here before but failed miserably.

That's the one I am considering. My son has a 2011 5.0 with a 4" Diamond Eye catback and that's why I bought this one. His has FAR less drone inside than my 21.

I’m gonna say both. It just booms inside. I love the sound and bought a Coyote with intentions of doing an exhaust. Local driving is just fine. Interstate is a bit much inside.

Hey fellas In a leap back to my youth and my foxbody days, I decided to go straight to the big boy and installed the MBRP 4” race exhaust. And like their video says- it’s “loud”. The install was simple. Had factory exhaust out in one piece in 15 mins. New one on in 30. Great quality! After...

I don’t- but go to https://www.mbrp.com/products/s5209409 to watch the 5.0 video portion and you’ll get the best sound. i tried on my iPhone but it doesn’t capture it. i bought that kit and it fit perfectly.

Same. Well- actually I decided to relive my foxbody youth and throw a catback on the truck yesterday. I can say I can’t hear any idle noise now. Note to self: When the MBRP guy on YT says their 4” system is labeled as “race”, maybe he’s just being honest. I’ve got to say- I’m in love with the...

Yes on oil. I changed the factory fill at 5K and am using Royal Purple with a Wix filter. The oil usage is almost non existent. I finally found another post (cant remember the forum) and a guy posted a video and it was identical to my sound. After start up, there is about a 2 sec delay and the...

OP- I finally found a video that sounds EXACTLY like my 21! It sounds horrible. dealer acknowledged the noise- hard to miss it. Ford customer care got involved and engineering felt it was my transmission. So last week I got a brand new transmission, torque converter, and cooler. Guess what? To...

Maybe it is? Mine seriously is so loud I don't like starting it around coworkers when its cold. My buddy's 5.3 starts with a loud exhaust note and no noise up front. My engine note is drowned out with a bunch of odd whining, grumbling sounds coming from underneath the engine bay. My 2013 5.0 was...

I have a 21 F150 I bought back in October. Lariat Sport, 4x4, 5.0, 2KW outlet, dual alternator, etc. It now has 6K. Since new, on a cold start, the drivetrain somewhere is really loud. Not a knock or rattle. It sounds like a cavitating pump / growl. As soon as it warms up, its quiet. Dealing...

Just providing a follow up- truck now has 5500 miles. Dealer at my request put truck on lift overnight and did a remote start with camera rolling from under the truck. Sent to Engineering. They are replacing trans, torque converter, and cooler. The sound is loudest at front pump / torque...

I did just that today. I put my phone directly under the transmission this morning, hit record, then remote started the truck. Sent to my dealer and he immediately said "that's not valvetrain noise- I'm sending to engineering". I then told him id bring the truck next week, let him put it on a...

So I am now at a crossroads. My dealer did receive notification from engineering. The video I had sent to the dealer was forwarded to them. They claim they have never heard that type of noise- and get this.. They think it may be coming from the engine. Primarily valve train- possibly valve...

truck angle doesn’t seem to make a difference on mine

I'm still waiting on an answer for the noise. I posted earlier in this forum (21 5.0 truck OCT build date). Now that its getting warmer, the noise is much less pronounced- which frankly sucks. My dealer basically is unwilling or not knowing where to go with diagnostics. I stopped in there two...

I am stumped as to why it only does it after the truck has sat. It sounds like it is coming from the bellhousing area. It stops hammering after it runs for a bit. Extremely embarrassing.