3.0 Duramax S&B air intake discussion

gemarsh · March 28, 2021

6 hours ago, Pswa320 said:

Anyone install that can provide new feedback?

has there been any negative impact on mpg’s for those not using a heavy foot for throttle response?

Absolutely no turbo whine. There is more air flow sound, but not the old school flipping the lid on a quadajet, but more of a deep echo, xlr8ing . Nothing to take away from cruising 80 mph in sound comfort, though.

Archangle · April 9, 2021

I see some have ordered this.Any updates from guys who have ordered this?

Stranny · April 15, 2021

Any update on this guy's? Could we get some input on MPG up or down. Also is the feel of response and performance gains being sustained. Thanks

RoadGlideSully · May 19, 2021

Just ordered mine today. I'll provide some additional feed back once I get it all set up.

RoadGlideSully · June 29, 2021

Finally got around to doing the install on my 21 Sierra.

Install: I'm not a mechanic but am pretty damn handy. I'd say the install was a bit more difficult than I expected after watching the S&B install video. Lots of tight spaces to get things (including my huge hands) in and out of. It's difficult, but if I can do it, it's not impossible by any means. Took me about 4 hours total.

Sound: It's a bit quieter than I expected but on deceleration you know it's there.

Responsiveness: I noticed a little quicker throttle response at the low end from a start. I haven't really put it through it's paces yet but overall I'd say there is a slight performance gain.

MPG: I have only driven it about a 100 miles since install. Thus far I'm getting maybe .5-1 MPG better but I've been pretty easy on the right pedal maybe more so than in the past.

Net Net: I'd say it's a good value if for no other reason than the bottom end acceleration I have experienced so far.

Feel free to ask questions.

Stranny · June 29, 2021

49 minutes ago, RoadGlideSully said:

Finally got around to doing the install on my 21 Sierra.

Install: I'm not a mechanic but am pretty damn handy. I'd say the install was a bit more difficult than I expected after watching the S&B install video. Lots of tight spaces to get things (including my huge hands) in and out of. It's difficult, but if I can do it, it's not impossible by any means. Took me about 4 hours total.

Sound: It's a bit quieter than I expected but on deceleration you know it's there.

Responsiveness: I noticed a little quicker throttle response at the low end from a start. I haven't really put it through it's paces yet but overall I'd say there is a slight performance gain.

MPG: I have only driven it about a 100 miles since install. Thus far I'm getting maybe .5-1 MPG better but I've been pretty easy on the right pedal maybe more so than in the past.

Net Net: I'd say it's a good value if for no other reason than the bottom end acceleration I have experienced so far.

Feel free to ask questions.

Thanks for sharing your experience so far. If you remember in a couple hundred miles down the road when you get an idea how it affects your mpg up or down, let us know. Thanks

JSBAT4 · July 22, 2021

I’m waiting for them to come back in stock and wondering about MPG changes so keep the reviews and info coming!

AML · September 9, 2021

Anybody notice a difference with the optional panel installed vs. not? Got my kit installed last night, it’s quiet, quieter than I thought from listening to the YouTube videos. Wondering if I take the panel out will make it any louder??

mjonesjr84 · October 22, 2021

On 9/9/2021 at 8:35 AM, AML said:

Anybody notice a difference with the optional panel installed vs. not? Got my kit installed last night, it’s quiet, quieter than I thought from listening to the YouTube videos. Wondering if I take the panel out will make it any louder??

I left the optional panel out when I installed mine last weekend. I can tell a huge difference in the sound. Those that say they can't hear the intake must be deaf. I can tell a big difference in throttle response. I've probably picked up about 1.5 mpg so far. Granted, it is hard to tell if it is the intake or the truck getting more broke in since I just surpassed 1,100 miles on my new truck.

RoadGlideSully · October 22, 2021

On 6/29/2021 at 5:39 PM, Stranny said:

Thanks for sharing your experience so far. If you remember in a couple hundred miles down the road when you get an idea how it affects your mpg up or down, let us know. Thanks

I have not really noticed any significant changes in MPG. To be honest, that could be influenced by the fact that my right foot has gotten heavier wanting to hear the air flow which is only really present for me at lower speeds.

Stranny · October 22, 2021

3 hours ago, RoadGlideSully said:

I have not really noticed any significant changes in MPG. To be honest, that could be influenced by the fact that my right foot has gotten heavier wanting to hear the air flow which is only really present for me at lower speeds.

I was hoping you'd see some constant noticable improvement. Oh well, still considering it. I am waiting for the banks Derringer to come out. I am definitely getting that. But I think I'll get the S&b with it, I think the comb will have more bang to it. At least for the placebo effect.

mjonesjr84 · October 27, 2021

I finally got to do a small trip with my S&B installed (50 miles). There were several hills on a 2-lane highway that the truck, before the S&B, would downshift about 1/2 way up with the cruise set on 64 mph. This trip, with the S&B, the truck didn't downshift. It seemed to take the lugging better without needing another gear.

I can hear the turbo spooling more when the truck is in the 1,200-1,900 RPM range with the S&B.