I just got finished installing my MBRP exhaust, kinda. I have a 2004 LB7 EC/LB. First the instructions say "Crew Cab & Extended Cab Long Bed Trucks Require the use of the 18" Mid-Extension pipe Provided." Online it says you only need it for a long bed crew cab. Either I installed it wrong or it is not required. The directions suck! I tried putting the Main extension pipe in frontwards, backwards, rotated it 360 degrees. I could not make it fit right. I finaly ran it above the crossmember instead of below it like the factory pipe. So everything is connected and tight and I started it up and don't have any rattles but the pipe is touching the crossmember which doesn't seem right and it is also touching the heat shield right above the crossmember. Am I supposed to trim from the main extension pipe and then add in the other extension pipe? Who knows with these instructions. Why don't they just make a kit to fit each truck instead you having to basicly build your own exhaust? Also you have to figure out where all the exhaust hangers go like a jigsaw puzzle how about numbering them or something. I used to be a factory car dealership mechanic and an aircraft mechanic, I would like to think I am not an idiot. If I had a tubing bender I think it would have been easier to build my own.

See I dont understand. MBRP is not a horrible brand by any means but its stories like this that I've heard about them which is why I didnt buy it. For some reason any time I ask about an exhaust people reccomend MBRP even if I wasnt asking about it. Main thing I'm trying to get at I dont know why this system is so popular. Especially when the price tag on its not even that good.

I just got finished installing my MBRP exhaust, kinda. I have a 2004 LB7 EC/LB. First the instructions say "Crew Cab & Extended Cab Long Bed Trucks Require the use of the 18" Mid-Extension pipe Provided." Online it says you only need it for a long bed crew cab. Either I installed it wrong or it is not required. The directions suck! I tried putting the Main extension pipe in frontwards, backwards, rotated it 360 degrees. I could not make it fit right. I finaly ran it above the crossmember instead of below it like the factory pipe. So everything is connected and tight and I started it up and don't have any rattles but the pipe is touching the crossmember which doesn't seem right and it is also touching the heat shield right above the crossmember. Am I supposed to trim from the main extension pipe and then add in the other extension pipe? Who knows with these instructions. Why don't they just make a kit to fit each truck instead you having to basicly build your own exhaust? Also you have to figure out where all the exhaust hangers go like a jigsaw puzzle how about numbering them or something. I used to be a factory car dealership mechanic and an aircraft mechanic, I would like to think I am not an idiot. If I had a tubing bender I think it would have been easier to build my own.

I recently installed the MBRP pipe on my 2004.5 EC SB and where I purchased mine from was a member on this forum which goes by the name DISTRBD He was very helpful and he said that with my cab/bed config. that I would have to cut approximately 9-91/2 inches from the main ext pipe. My guess would be that after the four inch flange, attach the main ext pipe and then with the 18 inch ext pipe you would have to trim that pipe some. I am not sure how much but it should be tha differance in inches between the EC and CC configerations. Also on mine the main pipe that has the large curve is to be installed BELOW the crossmember, that's the way the stock pipe was routed.

If you still have problem or ??? PM DISTRBD he was very helpful:D

JLew

I bought mine from DISTRBD also. I haven't tried talking to him yet. I started puting it in around 11am and figured I would have plenty of time before I had to go to work at 4pm. I put the MBRP pipe up against the factory pipe and the bend is not the same. The pipe ends up in the same place at the ends but the bend in the middle is a lot shallower. Man that is totally cheesy if I have to cut some off of one pipe and then add in an extension. What kind of crap is that? Actualy I just went and looked at it and it looks like that might work if I trim from the front of the extension pipe and then add in the other extention. Some better instructions would definitly be nice though and I still think it is totaly cheesy. I don't have time to do it now because I have to leave for work in like an hour. Hope is doesn't mess anything up driving it like that until tomorrow. Also I want to double check with DISTRBD before I go cutting it up.

Mine fit like a glove. I didn't have to cut anything on a crew cab short box. By far the toughest part of installing mine was removing the old one.

I guess the instructions weren't great but who reads instructions anyways? :D

Mine fit like a glove. I didn't have to cut anything on a crew cab short box.

:exactly: !

Too bad I don't have a crew cab short box instead of a extra cab long box.

I have never had a fitment problem with MBRP. They all fit very well. Never had to trim any pipes to fit or anything.

That is wierd considering it says right in the instructions that you have to cut the pipes for different trucks. How many have you installed?

I think on the EC/LB's you either have to cut the main exhaust pipe (that would attach to the flange) about 9 inches, then use the extension, OR cut the extension to 9 or 10 inches long and add it in after the flange.

For what it's worth, MBRP does have a very good, quality product. DSTRBD is a hell of a vendor, too (Thanks Nate!)

That being said, MBRP's instructions are poor at best. They really have to fix those. I'm surprised they haven't , since they have a membership on this board, and have seen all the complaints. My advice is to lay the pieces out first BEFORE you start removing the OEM, and figure it out before you NEED to.

Yeah after looking at it with that info it looks like that will do it. I guess I get to spend another morning under the truck and finish the fabrication on my one size fits all exhaust kit. Of course I just loaned out my sawzall a few days ago. I wonder how many blades it will take with the jigsaw. May they should include a tubing cutter with exhaust since they make you finish the manufacturing.

For my Xcab/SB I cut whatever the amount was they said, and it was the right length. But the instruction diagrams were still crappy. And I about went nuts before figuring out that one of the hanger/clamps was wrong. After a lot of telephone time, we got things straightened out. They were cooperative and did send the right one, but the truck was out of commission for several days. The whole thing was a real pain in the #ss that never should have happened. It works ok now but instead of going through that I'd just as soon have bought a Hog, which is local.

:exactly: !

Yes, the system will fit like a glove if you have the CC/SB or if you have the CC/LB then you add the 18 inch ext. pipe but, for any one that has the Extended cab SB / LB configerations there is cutting involved. It seems to me that MBRP should market there exhaust system with two different main ext. pipes that way anyone with a extended cab could just install without cutting and, if you have a EC LB just add the 18inch ext.

JLew:)

I have an extended short bed and i had to cut an additional 1" or so off the lead pipe than what they said. I also had to flatten out a little on the driver tail because i couldn't go up without hitting the frame. Then the two hanger/clamps they provided...neither one fit right so i heated and bent the long one to fit. I also pitched the clamps in the garbage cuz the tails kept moving no matter how much tightened em with my 2135TI, and used stainless band clamps....much better. Aside from all of that, i love it. But an install like that makes me want a lift in the garage:-)

Well I after much researching and using this and other sites deicided to purchace a MBRP for my CC/SB. Being a mechanical dunce I hope I can just stick it on. Will I need a gasket at the Cat ? Hope I did the right thing.

Yes, you will need a gasket and MBRP supplies it with the kit.
I'll add that mine also fit nicely (CC/SB), BUT the instructions definitely suck!


Well I after much researching and using this and other sites deicided to purchace a MBRP for my CC/SB. Being a mechanical dunce I hope I can just stick it on. Will I need a gasket at the Cat ? Hope I did the right thing.

Installed mine (2005 ext cab short bed )on the lift at my shop in 45 min. i was able to take out the factory exaust in 1 piece no cutting. I installed the back end first than cut the front with a sawsall slapped it together and welded a 1 inch section at every joint ,and done. yes the clamps suck but they worked fine .the welds were just in case, I will take this truck on some rough trails while hunting .so far so good no rattles or leaks .looks well made and is nice and QUIET inside. got it from Mark Craig price was right ,fast friendly service.

Mine went on no problems also (mine is a crew cab though). I even started a thread showing the one "problem" I had... Wasn't with the installation, but rather the removal of the stock system. As you can see in one of my photos, I laid the MBRP out next to the stock system to see if there would be any miss-match bends etc. It pretty well matched the stock system, bend for bend... Just my 2¢.

Please see link... http://dieselplace.com/forum/showthread.php?t=31313

For clamps, I HIGHLY recommend buying some 4" band clamps from Jegs or NAPA. Easier to use, and won't deform the pipes. (nice if you ever want to remove it)

As for the mounting clamps, you just have to fit the exhaust up first before tightening ANYTHING. IIRC, the one behind the muffler went snug up against the back of the muffler, over the band clamp.

Mine fit perfect no cuttin involved, had exstention left over and one clamp

Well I just finished the second install after measuring once & cutting twice. I still wouldn't say it fit like a glove though. Most of the rubber hangers are really tweaked because the metal hangers don't line up exactly right. I tried rotating the pipes and moving stuff around to get it as close as I could. I didn't notice a drone yesterday on my way to work when it was stuck between the crossmember and heat shield. Hopefully it won't have a drone today after the reinstall. I hope it doesn't. I take some long trips with the travel trailer and now the new 5th wheel I am picking up on Friday and I don't need that competing with my satellite radio. Too bad I now have four exhaust joints!

It took me about 2 hrs. to complete my install on my ext. short bed, after reading the instructions appx. 15 times and still not understanding compleatly!
They instructions definately do suck!!
I cut 9.25 inches off the forward tube that clamps to the bolt on flange.
Other than alot of twisting and pushing and it went on fairly easy.
I was able to get all the hangers and rubbers straight but it was a pain.
I agree with Utahski, I also was screaming :wtf1: at the hangers.

But it sound nice and I can definatley notice a power increase, I might even notice a MPG increase if I could ever keep my foot out of it. :rolleyes: Maby some day:rolleyes: :rotflmao:

Easiest way to install is to first lay out the system. Then, istall from the rear forward. This will make it easier to see where each pipe has to fit and exactly what needs to be cut. There is only one way for them to fit and for the bend to clear the crossmember on the intermediate pipe. The cut needs to be made right at the 4 bolt flange. If anyone has any questions installing their system, please dont hesitate to give me a call.

Forum members

Sorry for taking so long to post on this.......... we are building three show vehicles right now trying to get these ready for the SEMA show in Las Vegas come Nov 01 and I have not be available on the forum as much as I would like, my appologies.

I have just spoken with our technical director, Jason Hackenbrook he will start on a new set of instructions right away for the DMAX. These new instructions will include pictures to help during installation as well as a full written step by step type set up that will be easy to follow. I'm sure we will be able to have these new instructions available by the middle of next week. To help those installers that may be starting an install before this, Jason's direct email is jhackenbrook@mbrp.com Please feel free to contact Jason with any questions you may have.
Thanks for the input and the support.

MB

You could look in the Product Reviews here...........I did a detailed write up and install over a year ago...........

It has a lot of tips, tricks and pictures.
.
.

Hey Mark,

How about posting the directions in a PDF so that it will be available to those that have a kit to install with the old (sucky) instructions??




Forum members

Sorry for taking so long to post on this.......... we are building three show vehicles right now trying to get these ready for the SEMA show in Las Vegas come Nov 01 and I have not be available on the forum as much as I would like, my appologies.

I have just spoken with our technical director, Jason Hackenbrook he will start on a new set of instructions right away for the DMAX. These new instructions will include pictures to help during installation as well as a full written step by step type set up that will be easy to follow. I'm sure we will be able to have these new instructions available by the middle of next week. To help those installers that may be starting an install before this, Jason's direct email is jhackenbrook@mbrp.com Please feel free to contact Jason with any questions you may have.
Thanks for the input and the support.

MB

Forum members

Sorry for taking so long to post on this.......... we are building three show vehicles right now trying to get these ready for the SEMA show in Las Vegas come Nov 01 and I have not be available on the forum as much as I would like, my appologies.

I have just spoken with our technical director, Jason Hackenbrook he will start on a new set of instructions right away for the DMAX. These new instructions will include pictures to help during installation as well as a full written step by step type set up that will be easy to follow. I'm sure we will be able to have these new instructions available by the middle of next week. To help those installers that may be starting an install before this, Jason's direct email is jhackenbrook@mbrp.com Please feel free to contact Jason with any questions you may have.
Thanks for the input and the support.

MB

Mark,

You guys make a very high-quality product. I'm glad to see you're finally stepping up and fixing the instructions problem.

I've got two ideas for you.

1) I know these will add to the cost of the exhaust kits, but you really should include band clamps for the joints. They make for a higher-quality kit, make attaching the pieces easier, and allows for removal later (if the need arises).

2) Whether you use idea #1 or not, please number the clamps, esp the ones with hangers. For most apps, the hangers will go in the same spots, so numbering them will help, both for the guy writing the instructions and the installer.

Thanks much for addressing the issues.....:thumb:

i had to cut 2 inches from the extension pipe on my 04 lb7 ec lb to get the system to line up.

SteveNorCal,

Hey guys I am not sure if you're insulting me or Martin at MBRP but one of us got hemmered!!!!!!!!! I post a ton about MBRP so alot of folks think the company and I are the same, and I guess insome ways we are. I will forward your suggestions to Martin as he doesn't get on here too much and we both appreciate the input and support from you'll.

Makr @ DPPI

Still here................ Jason is wrapping up the instructions now for the DMAX, We have all the pics done and have test fit almost every vehicle config now. To better serve all the forum members Jason Hackenbrook will be creating an account here on the forum as MBRP TECH. Jason will be available to help in any way possible on MBRPinc technical issues.
SteveNorCal .......... Yes, instruction posted here is a good idea, we will have to look into this but I'm sure this is possible, great idea.
Thanks
MB

Great!!! Glad to help out a great company that puts out a great product and listens to their customers.

Looking forward to seeing the new and improved instructions w/pictures! :)

I agree that the instructions were a little fuzzy... but I didn't have any problems installing. It took a third of the time to install the new one as it was to get the stocker off. Now that was a job. Your estimate on the 9.5" was right on the money as well.

My only suggestion on an addition to the kit would be a small tube of antisieze.

Thanks guys. The latest instruction will be up shortly and we do look forward to your feedback on these.

MB

Hello Forum Members,

My name is Jason Hackenbrook and I am the Technical Co-ordinator for MBRP. I have finished improving the instruction sheets for all of the systems. I am just in the process of converting them to PDF and hope to have them posted today.

I also had a problem with the hanger clamps...

All the pipes fit the way they were supposed to, but all the different hanger clamps were confusing and none seemed to fit right. In fact, I have two of the hangers in my toolbox, because no matter how hard I tried, or where I put them, they would not work correctly. To this day the tailpipe moves around under the truck during normal driving. Looks pretty cheap IMO. I do LOOOOOOOOVE the way it sounds though. I also bought the stainless band clamps in case it ever needs to come apart in the future.

I guess I just need to head to the auto parts store and pick up some hangers and start over to make the thing solid.

Hello again Forum Members,

I have attached links for you to view our revised instruction sheets. Please review and let me know any concerns.

If you have any troubles opening the links try holding down the shift button and hit the right mouse button to open the file.

http://www.mbrp.com/instructions/S6000.pdf
http://www.mbrp.com/instructions/S6002.pdf
http://www.mbrp.com/instructions/S6004.pdf
http://www.mbrp.com/instructions/S6006.pdf
http://www.mbrp.com/instructions/S6008.pdf
http://www.mbrp.com/instructions/S6010.pdf

Thanks again

Jason Hackenbrook

having installed other exaust my mbrp duals went on perfect with no problems