FLOPRO DUAL 5 INCH EXHAUST SYSTEM | 2017-2019 CHEVY/GMC L5P DURAMAX

2017-2019 CHEVY/GMC L5P DURAMAX

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Instructions
No installation manuals available for this product at this time. Request a manual here.
Shipping

We offer fast and free reliable shipping for all customers to ensure that you receive your products as soon as possible. Shipping generally takes 3-8 days to transit to you depending on where you're located in the US and Canada. Hawaii, Alaska, and other remote areas may take longer and invoke further shipping expense. Please contact us if you're want more information.

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We understand the importance of clarity in our return procedures, both for our customers' peace of mind and for ensuring a smooth process. We've outlined our updated guidelines to facilitate efficient returns here.

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Product Information

Product Description

5" Downpipe Back Dual | 2017-2019 GM 2500/3500 6.6L DURAMAX L5P

Description

Constructed out of T409 Stainless, this exhaust system is designed to simplify installation with included clamps, preweld contour bends and improved flanges. Enjoy a noticeable boost in performance, lowered EGTs and amplified air flow with this Mel's system. For powerhouse performance, Mel's delivers - horsepower you can hear!

Features:

  • Ease of installation
  • Contour Bent Hangers
  • TorcTite® Clamps
  • 4" Cat Pipe
  • OEM Style 4 Bolt Flange
  • No Bungs
  • Fits Cab/Box Configurations: EC-CC/SB-LB-Dually

 

IMPORTANT NOTE
These kits will only fit models equipped with the OEM style 4-bolt flange off the turbo direct pipe! 

 These parts are for use on non-registered race vehicles on closed-course competition events *Installing or using this part on any emission-controlled vehicle ("street" or "off-road") may violate federal and/or state emissions laws and regulations. SOLD AS METAL ART.

Powerlevel Options

Product Compatibility

Chevy / GMC
Duramax
2017-2023 L5P/L5D

2017-2019 CHEVY/GMC L5P DURAMAX

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Worked great, will use again if needed!!

Dale

Cagley

I am very pleased with everything purchased from here. All went smooth with no installation issues. Thank you for making my truck awesome!

Gary

Morrison

You nailed it, great products and a great price!

Jeremy

White

You guys did awesome!!!

Whitney

Schiesser

2016-2019 GMC & CHEVY Colorado & Canyon Duramax | EGR DPF DEF DELETE KIT very nice for both kits i bought you guys, my business will be a returning customer for sure. also very fast shipping awesome Nick Therrien, owner Larocque, Valleyfield, J6T 4c8, QC

Nick

Therrien

So far so good

Jeff

Jordan

The kit works great. The DPF and DEF deletion pipes fit perfectly. The EGR Kit had everything I needed and the RaceME Ultra was easy to install. The way the truck runs now is awesome, The horsepower and fuel mileage was exactly what I was looking for. The fuel mileage on my 2017 Dodge with the 6.7 cummins with from 15-16 MPG to 24-26 MPG on the highway and from 11-12 to 18-19 in town. I'm extremely happy with my purchase. Thank you.

Dave

Peevey

I received my order quickly and it was very easily installed. I was given the wrong tunes for my vehicle but it was resolved in less than 24 hours!

Brett

Nichols

%100 great service awesome timing on parts!

Jesse

Ward

good tunner worked the way they said.

Bat

Works as it should. Quick shipping

Chris

Quacken

Great product, had everything I needed. Installation went great, got it all done myself in my garage in about 6 hours. Truck runs awesome with engine and trans tunes.

Andy

Kosevich

The product was exactly as pictured and was what was expected. The shipping was late and I paid $350 for overnight shipping and it ended up being two days and I still had to go pick it up from the shipper (FedEx).

Tyler

Cline

Very happy with my order. Could have used some instructions on the install. Thanks Youtube. Also don't really understand the trans tune. Didn't get any verification it was installed on the tuner or even how it is installed. Don't even know if I really have it.

Tracy

Funderb

Truck runs great now. Thank you.

James

Vournas

Very pleased with everything I got everything went pretty smoothly and is working great! Thank you guys! Would definitely shop again or suggest to others. Only complaint is on the 5-in downpipe it is a rather tight fit and kind of touches the frame there maybe a slight Factory dent or something

Jude

Gray

Yall did great! Fast service and overall great experience!

Travis

Puryear

Great customer support!

Javier

Hernandez

Thanks guys, everything worked out great. My order came in on time and any questions I had, you guys we're able to answer me via email ASAP. I will definitely recommend you. Thanks again

Tristan

Wright

Everything was handeld very well and all the stuffed worked no problem

Chris

Shires

Great service. Fast shipping. Great product. Will do business with you guys again!! A++

Joe

Caddick

Ordering process was great and everything arrived quickly and intact. The GDP tunes seem decent although there is some smoke on level 1 where I wouldn't think there would be any. Overall very satisfied with the product.

C

Gilliam

thanks again the truck runs great went from 27 to 32 mpg

Darwin

Grewe

Everything I have ordered so far has installed and functioned without fail. Shipping has been prompt. Customer service has been knowledgeable. I would recommend these products.

Joe

Murphy

You guys are great! ")

Betty

Sutherland

It was easy and it makes the truck run better

Chris

Lagorga

I'm waiting on the rest of the stuff but the employee or employees I've been dealing with have been super kind and helpful. Thanks

Tom

Fern

Excellent service and parts... Fast shipping!

Jonathan

Coo

I am very pleased with my purchase!! The only thing I wish I would have got was the pyro that goes with it. I'm saving now so I can purchase that in the near future. Thank you so much!

Mark

Lujan

The kit was fantastic. My stage 2 tow tune is a good tune.

Jeff

Wooton

Could have been better on shipping notifications on tracking numbers. I had to keep on the situation of my order by constantly emailing for tracking#'s but I finally got my products and I am very happy with the end result.

Chris

Click

I just finished installing the RaceME Ultra and complete EGR, exhaust system kit. This woke my truck up like never before and it runs great. Technical support was a great help and Michael answered all my questions in a timely manner. Looking forward to many miles with no check engine lights. Thanks again for all your help.

Doug

Miller

Hello, your kit worked awesome. No issues at all. Truck runs great. Thank you

Sun

Man

Very happy with my purchase great products thank you and I loved how fast it arrived thanks again

Peter

Rodriguez

Very satisfied with the results of the Tow Haul tune, good service and fast shipping. I do however like talking to someone on the phone more than communication thru email. (I'm just a little old school I guess)

Mike

Moyers

The service that was provided was phenomenal. Couldn't have asked for better service. Placed my order and arrived on a timely manner taken into account I live in Louisiana. Truck sounds great. Thanks again.

Josh

H

I'm very impressed by the sound and power it makes when I get on the throttle(WOW😁)

Eddie

B

Yes very happy with all your service. Thanks

Wayne

Hucke

I'm very happy with the service and the fast response when I had any questions thank you very much

Eliazar

Excellent customer service and the process was pretty simple overall (lots of wrenching but so worth it!). We are ecstatic with the improved performance of the truck. Tuner is excellent and easy to understand!

Dianne

Brooks

The best product and excellent customer service!

Jeff

Boudreau

The truck is running pretty good now thanks to your tunes and email help. I ran the 60hp tune for a few days then loaded the 100hp. Ran a tranny learn session out on the interstate immediately after the flash. Truck runs better on the 100hp than the 60hp tune in my opinion. No rolling coal, just a little "coal dust" when accelerating. The mileage is fantastic compared to what it was getting before the turbo replacement and tuning. It was 13-14 mpg before the swap. Now running the 100hp tune, I'm getting 21-22mpg. Unbelievable! On a fresh refuel, I reset the mpg display on the truck. The first 125 miles saw 22.5 mpg! After five days of mixed driving, it was still holding 21.8 mpg. Now, the big question is: How accurate or valid is the PCM calculation and display? Who care? Before it was reading 13-14 m mpg. Now it's showing 21.8 mpg. That makes me happy and that a good thing. I will run a manual calculation when I refuel again in a few days to cross check. Thanks again for your help and patience.

Ken

Kilby

Works great thanks

Tyler

Birtciel

Did exactly what I wanted.... And would definitely recommend

Greg

Borgman

Great kit, very satisfied with the quality and performance and your customer support is fantastic, thanks for making the 6.7 run and sound great

Tim

Hans

You have a very organized company it came right on time thank you

Mary

Clark

Yes, I am definately happy with the products and services I purchased from you! The shipping was fast and secure, arriving within 5 days of ordering. Thank you for a great shopping experience, I have several friends looking for similar products and services, and have directed them towards your company. Thanks again for everything-

James

Dean

Works great nice setup

Cristian

Larios

You guys are the best, thank you.

Mike

E

Very helpt and really like the quick reply's to any question I had Thanks

Steve

Jones

Everything went well. Took me 4 hours to complete, solo. Only gripe I could have (which I don't) would be the lack of instructions for the bracket that bolts to the exhaust. Took me a while to figure that out as the instructions showed a different set up. Preciate the kit. Have recommended to other folks.

Cordy

DD

Thank you all for help and support everything is on truck is running fine and upgraded to the hot and cold intake fuel mileage is so much better went from 9.7 pulling my skid loader to 14.8

Jerry

Polston

Did exactly what it is meant to do... go me back on the road w increased efficiency! Beyond happy with the tuner and it's ability to monitor drivetrain functions while in use! Worth every penny!!

Baros

Product was great. Easy installation. Great improvement over stock.

Ron

Pontius

Five stars, very responsive!

Nelson

Merced

Very pleased with it, customer service was great with any questions, only issues I had was that electrical connector plugs were not available along with a better option for switch that would of had a direct connector without splicing. Thanks

Rich

Harris

Great company to work with. I had a problem with my order and they took care of it right away. I would recommend them to all my friends.

Dave

S

The products that I bought from your company are outstanding and your customer service is second to none thank you for all of your help. I will recommend your company to everyone. THANK YOU VERY MUCH YOU GUYS ARE AWESOME

James

Milburn

These guy(s) are great! Knowledgeable, friendly, helpful. Highly recommended.

Ken

Kilby

Very happy with the kit, everything fits and performs well.

Joe

Murphy

So far exactly what I want to achieve, smooth, no surging, trans is solid. The delay between the 3rd and 4th is a bit long. I was hoping for an earlier shift.

Mike

G

Awesome products at an amazing price. Everything was so simple to install and program. I would highly recommend your product to everyone

Charlie

Clonch

Installed this kit a week ago so far it has been doing good. Thanks

Shannon

Braun

Small issue with shipping on time but 5 stars

Richard

Parks

Very happy

Charlie

Wade

You did a great job 🤙

Oliver

Large

Everything went well. Thank you very much

Tom

Honrath

Everything was great my order was exactly what I wanted no hassle no problem. Would definitely order again from Y'all again.

David

Woodc

finally got it done. amazing power difference and I think the fuel economy will be better when I get through playing with it.

Clayton

Keenan

The kit was great and super easy to install. I didn't see the transmission tune.

Ralph

Franks

Thanks y'all Done great

John

Rodge

Install went awesome, instructions were good and everything went smoother than expected. Thank you.

Anonymous

Everything fit and is working very well. Order was delivered faster than expected. Would recommend this kit to others.

Marland

King

Everything worked out perfectly. Super happy.

Rian

Mckinnon

This kit was the best thing for my truck it like a brand new truck run so good an is bad ass fast now thanks again for great kit an service

Jeff

Watkins

The product worked perfectly, solved all my problems. Thank you.

Michael

Gilbert

5 Stars!

Daniel

Johnson

Great product and super nice customer service

David

Hancock

Yes very happy with both my orders

Nicholas

Estes

Yes I was very happy.

Lewis

Drywall

My order was shipped right out and I received it quickly. I am very pleased with your service and product. 5 stars!

Chris

Paul

Everything in the kit ordered worked great! I am a happy customer and will likely purchase again!! Thanks for the great products. Thank you for your time.

Tony

Russ

Worked great! The kit had everything I needed to fix the issue.

Tommy

Johnson

I would just like to say thank you for such a great system your team sold me. I had everything I needed and made this kit installation go very smoothly. I was very nervous going into this, my boys kept telling me it will be fine. The Agent 3 device was such an easy install it was crazy. Everything connected very easily and meshed well with my Banks equipment I added with it. When I have heard folks say it will wake up your truck, I had no idea until I started driving it. Completely different truck. Thank you for supporting this equipment and making this high value upgrade a smooth one. I definitely am spreading your name out there.

Gary

Morrison

Thanks for selling these kits! My truck runs like a champ. It was super easy to update the SCT and flash the ECU. I was a little worried but there was good instructions!

Angel

Proven

10/10. I had a little mishap with the EGR kit getting shipped but after a late-night email, that was responded to extremely quickly. Customer service top notch. Install quickly and easily. It is a great product and a great company.

Bob

Mcgee

Everything came in and seems to work just fine. Thanks

Greg

Rinkes

Great kit. Truck runs great. I went from 16.2 highway mpg to 19.9 highway mpg. The kit did not substantially increase exhaust noise, the truck is still quiet for a diesel. I am very pleased. I can now go down to grand isle fishing and not have to worry about my truck saying in 50miles your truck will only go 50 mpg. What a relief!

Steven

Unkel

I really appreciate all the help. I super excited to get the products installed on my truck. You guys are awesome with the quick turn around on the products and customer service.

Jesse

Di Lella

This product is really great. It has significantly improved the fuel mileage, going from 23 mpg to 28 mpg. On top of that, the engine now responds much more quickly when taking off.

Dennis

R

I am really like y'all customers Servies Very helpful.

Rodrigo

Luna

Worked great

Kenzie

Trucking

Awesome! Install wasn't too bad on 2017 Ecodiesel Ram 1500. Truck is much more responsive and should last longer now that I am no longer spewing carbon into my intake manifold.

Daniel

Johnson

Perfect I love it

Jose Ramos

Cortez Lopez

Great so far seems to be exactly what yall described thank you

Marty

Waggo

So I had a special case. I needed a tune for a 2008 C5500 Duramax. This is obviously a commercial truck. They were able to send me the handheld. My mechanic downloaded the parameters from the truck. He sent them off. I had a custom tune back in 2 days. The truck now runs great. Thanks to Dyno Diesels for a custom tune. When our government is doing everything they can to ruin diesels. Dyno has your back.

Roman

Parsons

Well let's just start this out by saying I have a 16 ram 6.7 and I ordered the ezlynk with the LION package shipping was very fast and everything was complete I deleted my rig it took a complete weekend because we had a little hiccup with the ezlynk not hooked to a technician but as soon as GDP opened the problem was completely fixed the five position switch was perfect and everything functions great the tip for the 5in exhaust is completely over the top but as a dump would look great I'm very pleased with the tunes just took my camper on a 80 mile journey and have ZERO complaints now the truck is a beast I highly suggest you go with DIESEL LION for the simple fact that it was very easy to install and use ...... on a side not I do also recommend headstuds!!!! Definitely worth it THANK YOU DIESELLION.COM for everything I will be sending business your way with all my friends

Casey

S

A PLUS. Everything was perfect. Tunes work as they should. Drivability is better than factory programming. Very happy and will buy from again.

Keith

Weston

Had my tunes and auto agent for about a month now. Super happy with results and wow was the my tuner delivered FAST, practically next day thru FedEx.

Jorge

Torres

Very happy with everything 5 stars

Kelly

Hatfield