Solving L5P Duramax Turbo Surge 

I've noticed this issue with my truck since day one. Bought the truck brand new and have played with multiple things. I have full WCFab piping. I'd really like to look into this ring to possibly help as i pull equipment everyday and the surge gets old ! THANK YOU i thought i was crazy when telling people my truck was surging !

Im sticking with Banks, hes been doing this for a long while, i trust him an his products.

I own a 2017 and 2020 L5P. I tow at a combined weight of 32k under all sorts of conditions. These truck DO NOT have a problem with compressor surge. This is my 9th Diesel truck, 7.3L has compressor surge for instance.

My last 22 5th gen had crazy turbo surge under 0 load. And only started happening once I added tge s&b. Now, I'm not sure if this code has anything to do with the surge or if the surge was caused by the code. But fully oe truck with an intake. Surge would happen as I was coming to a stop with my engine brake on. The truck ended up having slow boost respand full emissions failure so now I have a 21 l5p denali. I just thought it was odd to see surge on stock tune with just an s&b. I thought perhaps it was the s&b

I'm having this problem on my 18 L5p. Bought the truck brand new and just started doing this at 167,000 miles. The truck is tuned, deleted running nothing more than a aftermarket air intake and exhaust system... The truck will make a hissing noise and then intermittently chirp when under load (hauling a trailer) up even a slight incline.

Titan XDs with the 5.0 Cummins has this issue after tuning. Makes cruising at 75mph or more really annoying.

My 2019 L5P (with Banks Derringer otherwise stock) with 1500lbs in the box (2 snowmobiles on a sled deck) gets what I feel is a turbo surge. Slight grade or headwind and I lean into the throttle it surges bad, maybe 5 chugs in a matter of just a second or 2. It feels pretty violent and it usually scares the shit out of me so I let off the pedal. I haven't tried unplugging the derringer but I think that's my next move. Anyone have any thoughts on this?

I've got a 08 LMM 125k. I've got HSP bolt on's everything except egr delete, duramilage economy tune, fass 165 pump, ppe'd both pan's. Adapted oil filter to CAT, new radiator lines and mishimoto transmission cooler. My transmission can't seem to make up its mind going through the gears at slow and steady pace. I've got a shift kit, but nobody will install it, I'm thinking about purchasing your tuner that changes the transmission on demand of the tune. I seldom put my foot in it, I don't have to! 3 quarter throttle is plenty for me. Basically all I'm after is mpg, maybe little quicker boost response. I do have a 3"down pipe, it not installed yet. Seldom get out for distance on the inter state, getting 17 mpg city/local. What do you recommend?

Is the add-on surge ring opening diameter any larger than the factory intake horn opening? I wonder what percentage higher flow it would get with the aftermarket intake but with the "restrictor" at the end?

So if I have a bone stock truck with bone stock turbo you're saying I don't need that part correct?? I will be tuning soon though. Will this be an issue with a tune or stock?? Thanks!

My ring didn't include instructions or any notes so I just installed it. Now it's assembled with the surge ring still in my intake horn, do I need to tear it apart and cut that ring out? Why is there no instructions/ link to a youtube install or at least a note saying to remove the horn surge ring included with the ring in the box? If someone on facebook didn't see my pics and point it out I would have never known.

If we have a stock turbo do you recommend not cutting out the WC fab surge protector that cones with there's? Only cut it out if you have a upgraded turbo right?

Question, how do compressor surge covers not cause the same issues as a boost leak? I understand the air recycled back into the intake, but is it still not a big leak from the high pressure side? Or is its design and placement such that it's actually not a high pressure zone under normal operation?

L5P deleted.. Wcfab horn with surge ring. Not necessarily the chirping/surging problem, more like a rolling stomp on the throttle, and it coughs and falls on its face… then comes alive 🤷‍♂️

2019 l5p, Stock turbo with after market wc fab horn, have experienced surge while towing. So I just grind out wc fab’s built in surge ring and pop dmaxtuners in its place???