LML Finally had enough!!! [Archive] - Duramax Diesels Forum

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duramaxzak
08-04-2015, 05:19 AM
Finally got sick of dealing with the Dpf filter and DEF quality issues and decided to delete my 11' LML. Truck was trouble free for the first 60k, but the last 8k have not been!

I installed Flo-pro's 4" down pipe back S/S exhaust with muffler and Motorops auto cal with delete tune's.

So far very happy with the tuning and exhaust.

WisconsinHick1
08-04-2015, 05:39 AM
It took you long enough to see the light! :thumb:

duramaxzak
08-04-2015, 05:42 AM
It took you long enough to see the light! :thumb:

I actually really surprised myself how long I made it before deleting it, I never leave anything stock! :roflmao:

fast03
08-04-2015, 07:29 AM
I am in the same boat

$chultz38
08-04-2015, 07:48 AM
Me too. I just did the deletes with the flo pro delete pipe part #862 and now the truck is too loud. I am looking at a nelson or donaldson muffler but can't decide what one.

duramaxzak
08-04-2015, 08:13 AM
Me too. I just did the deletes with the flo pro delete pipe part #862 and now the truck is too loud. I am looking at a nelson or donaldson muffler but can't decide what one.

Yeah, that's why I bought the full exhaust with a muffler. I used Flo-pro kit # SS864. Nice and quiet when cruising with some nice exhaust tone when excelerating!

$chultz38
08-04-2015, 09:03 AM
I was going for more of the sleeper look by leaving the stock tailpipe and Def tank.

fast03
08-04-2015, 09:05 AM
I was going for more of the sleeper look by leaving the stock tailpipe and Def tank.

I will be leaving the def tank. easier to manage when having to smog it every 2 years in California.

Max Attitude
08-04-2015, 09:27 AM
I was going for more of the sleeper look by leaving the stock tailpipe and Def tank.


Have you looked into an FTE Resonator or Flo-Pro Twister muffler?

$chultz38
08-04-2015, 09:53 AM
Have you looked into an FTE Resonator or Flo-Pro Twister muffler?

Ya not quite enough for me. Thinking about a 40" or 51" muffler

duramaxzak
08-04-2015, 10:07 AM
I will be leaving the def tank. easier to manage when having to smog it every 2 years in California.

I left the DEF tank in for now, but may remove when I get some spare time.

duramaxzak
08-14-2015, 04:51 AM
I ended up ordering a S&B dry filter intake for the LML also. I will be doing some pulling with it this weekend, interested to see how it pulls on the "heavy tow tune" compared to stock.

So far its looking like I gained about 3mpg driving back and forth to work.

zf>allison
08-14-2015, 06:50 AM
A buddy of mine made his Def tank into a water meth tank, just an idea.

Max Attitude
08-14-2015, 08:48 AM
I ended up ordering a S&B dry filter intake for the LML also. I will be doing some pulling with it this weekend, interested to see how it pulls on the "heavy tow tune" compared to stock.

So far its looking like I gained about 3mpg driving back and forth to work.

Pulling the def tank takes about 10-15 minutes with the filler.

duramaxzak
08-14-2015, 08:50 AM
Pulling the def tank takes about 10-15 minutes with the filler.

Its on my list of things to do after pulling season is over!

duramaxzak
08-16-2015, 10:39 AM
Put about 350 miles on my truck pulling my 25' gooseneck trailer with my pulling truck on it (13,500lbs). I used the Heavy tow tune and was very happy with how it performed.

fast03
08-17-2015, 06:53 AM
Put about 350 miles on my truck pulling my 25' gooseneck trailer with my pulling truck on it (13,500lbs). I used the Heavy tow tune and was very happy with how it performed.

Nice!

duramaxzak
08-22-2015, 07:03 AM
Finally got to do some highway driving with the truck deleted. I went 150 miles to our families lake place in northern Minnesota and averaged 21.9mpg. The same drive before deleting I was at about 17-17.5 mpg. This is using the DIC, but I will hand calculate when I get to verifie it.

NC-smokinlmm
08-22-2015, 09:47 AM
You like the Motor Ops?

duramaxzak
08-22-2015, 10:47 AM
You like the Motor Ops?

Yes, very happy with it. Nice smooth power, good mileage. I'm not looking for the most powerful tunes, just a little extra power and able to delete emission equipment.

NC-smokinlmm
08-22-2015, 11:49 AM
Yes, very happy with it. Nice smooth power, good mileage. I'm not looking for the most powerful tunes, just a little extra power and able to delete emission equipment.

I like mine too. The race tune rips...:D

duramaxzak
08-22-2015, 11:57 AM
I like mine too. The race tune rips...:D

I haven't tried the race tune yet....

NC-smokinlmm
08-22-2015, 12:47 PM
I haven't tried the race tune yet....

I havent tried the other tunes yet...:roflmao:

duramaxzak
09-03-2015, 03:49 AM
Finally got to do some highway driving with the truck deleted. I went 150 miles to our families lake place in northern Minnesota and averaged 21.9mpg. The same drive before deleting I was at about 17-17.5 mpg. This is using the DIC, but I will hand calculate when I get to verifie it.

I forgot to update this, I did hand calculate the fuel mileage and it came out to 21.68mpg. So the DIC is still pretty accurate and that's a 4 mpg gain!!!

$chultz38
09-29-2015, 07:51 PM
For anyone looking for a quite muffler to put on a LML with delete pipes or just a loud system that you want to quit down the Nelson 86127M works very well. Just put one on my CCSB and it fits well for being 40" long. Sounds great I'm really happy with it.

c20elephant
09-30-2015, 05:00 AM
I had a Walker muffler for about a year finally started to rattle after about a year. Should have went with my first choice Donaldson but the Walker cross referenced with Donaldson, ya right quality sucked..

The Donaldson PDF file tells approximately how much sound attenuation you can expect from a particular muffler, could not find that in the Nelson or Walker lineup.

I went with a Donaldson M085421 as opposed to an identical size M085171 (about 40"OAL), the M085421 has an attenuation range of 12-18 decibels as opposed to 8-12 for the M085171....I also installed a Donaldson resonator up where the cat used to be to be sure I had no drone...

Page 56

http://www.emea.donaldson.com/en/exhaust/support/datalibrary/063025.pdf

$chultz38
09-30-2015, 07:44 AM
The Nelson that I used is 4" straight through without a center baffle, the Donalson that I looked at with similar numbers had one. They also have a resonator but it didn't look like it would fit in front of the transmission crossmember into the flo pro delete pipes. After hearing it last night I'm not sure I would want it any quiter anyway. And zero drone finally after being straight piped for a few months. For anyone running the flo pro delete pipes follow the instructions on where to cut the factor pipe and put everything together temporary then cut the new pipe about 37" away from the first cut and use the clamps that come with the delete pipes. This makes for a stealth look by using the factory tailpipe and is almost as quite as stock until you really get after it!

c20elephant
09-30-2015, 08:14 AM
Installed a resonator right after the torsion bar mount, it serves double duty as it looks a lot like something else. If I took the time I might have been able to install it before the transmission mount and obtained better drone reduction. I also installed a sock around the downpipe and the hot side pipe to further reduce cab noise, little if any turbo whine now......
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http://i60.tinypic.com/9ir238.jpg
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Hernpj01
09-30-2015, 08:31 AM
whats the part # for donaldson resonator?

c20elephant
09-30-2015, 08:41 AM
Page 32 in the link I posted earlier.

5" (125mm) I.D. and O.D. - Part No. M090072
4" (102 mm) I.D. and O.D. - Part No. M090362

$chultz38
09-30-2015, 09:19 AM
86144M is the Nelson 4" part number

56taskforce
09-30-2015, 10:23 AM
So far its looking like I gained about 3mpg driving back and forth to work.[/QUOTE]

It is things like this that tells me the emissions game is a whole lot of crap how could it be better for the environment by burning more fuel that isn't doing any work all this crap is just lining the pocket of people like Gore...

$chultz38
09-30-2015, 10:53 AM
I put a cold air intake, delete pipes and muffler, egr blocker plates, down pipe, lift pump, and tuning on mine and this thing is a blast to drive. Saving for trans and cp3 conversion...

c20elephant
10-01-2015, 05:17 AM
The emissions thing is maybe part crap and you don't know until you have it tested what the numbers are. With the maximum opacity of 40% where I live my truck went from 4.5% bone stock and subsequently to 6.6% (stock tune, a few items changed)and the last being 19.0% (90hp tune)

duramaxzak
10-10-2015, 04:25 PM
I finally got my S&B intake installed. Intake fit and finish was very good. I will update in a couple weeks to see if it helped or hurt fuel mileage.

39931

duramaxzak
10-18-2015, 03:09 PM
Have not noticed any change in fuel mileage with the S&B intake installed.

NC-smokinlmm
10-18-2015, 03:15 PM
You didn't get the 40 rwhp Rob said he gained? :D

Seriously though, can you tell any difference vs stock?

duramaxzak
10-18-2015, 03:45 PM
You didn't get the 40 rwhp Rob said he gained? :D

Seriously though, can you tell any difference vs stock?

Maybe a little more responsive, but nothing really noticeable.

S Phinney
10-18-2015, 04:10 PM
You should notice or think you notice it being a touch more responsive. That's limited by the tune in itself.

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