Lucely Engineered

This, only difference i see is the diesel has the grill shutters. Gas doesnt correct?

Warmer day update. Its in the 60s here now and its still nice and loud, i know on previous vehicles ive had turbos get a lot louder in the cold. Averaging around 21mpg in 100% city driving.

Yeah honestly i dont see how it would help or hurt at all with the plug in or out. The instructions dont say what they are thinking, just that its optional. The truck gets plenty of air from the stock location, and the filter is huge. I only left it out in hopes it was louder that way.

Install was fine, definitely not 3 hours. Hour and a half for me but I've worked in a shop and on my cars my whole life. Much more plastic clips than nuts and bolts. Hardest part is getting the coupler on the turbo, use the tube for leverage if that makes sense, and clock your hose clamps to the best location and you'll be ok. Box takes a little finesse to get in as well. Instructions are very well written, read the PDF. I have not tried plug in and out, honestly i left it out thinking it will be louder. This is a High Country so i dont really have water crossings to worry about with it being out. Also not worried about the flow difference.

I luckily dont have to worry about that living in Michigan. Ive never lived somewhere that required testing so i cant help you there.

Just saw your thread on this, i might just delete this one and move to yours.

2021 Silverado 3.0L LM2 S&B Intake ~40 degrees outside temp https://youtu.be/gJ7BKyQOYfU (I'm no youtuber, so please be nice about the quality) This is with the full kit installed, and the box plug left out like the instructions. Very noticeable idle air noise, part throttle turbo whistle, and zero throttle deceleration air noise. I was very surprised by how it sounds, never quite had an intake sound like this. I do like it a lot. Wide open throttle wont get much out of it but the part throttle around 2000rpm is where it hits a sweet spot. There is a loud zero throttle air rushing noise that's always there on deceleration, i find it cool but some could be annoyed by it to be honest. Edited 14 hours ago by Lucely Engineered

Just got a video for you guys finally for the S&B Intake. Take a look at my post here.

Performance wise id like to think it feels like it pulls harder, but honestly i only had 400 miles on it before doing this so my butt-dyno isnt very calibrated. And i dont do much WOT until the truck had some miles on it. As for mileage Thats hard to judge right now too, because we just went through a terrible February for weather, so 50% of the run time was remote start.

A few people were interested in a video to hear how the new 3.0L LM2 sounds with an aftermarket intake on in. So here you go. 2021 Silverado 3.0L LM2 S&B Intake ~40 degrees outside temp https://youtu.be/gJ7BKyQOYfU (I'm no youtuber, so please be nice about the quality) This is with the full kit installed, and the box plug left out like the instructions. Very noticeable idle air noise, part throttle turbo whistle, and zero throttle deceleration air noise. I was very surprised by how it sounds, never quite had an intake sound like this. I do like it a lot. Wide open throttle wont get much out of it but the part throttle around 2000rpm is where it hits a sweet spot. There is a loud zero throttle air rushing noise that's always there on deceleration, i find it cool but some could be annoyed by it to be honest.

https://www.dieselpowerproducts.com/p-sb-75-5137-cold-air-intake-2020-gm-1500-duramax-30l-lm2 Ordered from here. Looks like it replaces more of the stock system than the AFE. This has a pipe that goes all the way to the turbo. The AFE looks like its just part of it.

My S&B intake said it shipped yesterday, i plan on posting when i get it in next week. I dont think any customers have it installed yet.

Mine sounds like there is a case of water bottles and they are rubbing each other when i hit a bump... is that what anyone else has fixed?

Mine shakes while driving too, i guess i thought it was normal. Maybe ill have to go drive another one to tell.

The "Bench" seat trucks have the same bucket seats as the console trucks. All thats different is the middle Seat/Console. So unless the comfort comes from having a different arm rest, i dont quite see how you can feel a difference.