I’ve monitored the progress of the LLY induction problem that KB has been studying in great detail since last year. Finding the extreme intake flow restriction and engineering solutions with either a modified stock nose piece, or his modified LBZ system that yields power & mileage gains as well as heat reduction to the CAC should be very helpful to all. I was anxious to get my LLY fixed quickly as I still have some towing and long mileage trips to take during the Aug. & Sept. hot months ahead. I ordered KB’s Modified Induction Overhaul Kit with the internal airflow mod. last week. Comparing the original nose piece with his modified one is shocking. The complete instructions made it a very quick and straight forward install with no surprises. It’s a very sanitary & well designed system.

I’ve towed my 10k # trailer once since then and found my EGT on a 3 mile grade to be about 100* cooler with light throttle, 55 mph, tow haul engaged, and OD locked out. A surprising benefit was being able to tow the trailer on the smaller 60 mph rural roads in tow haul and OD enabled. Previously I’ve locked OD out and kept it at about 55-60 because in OD’s higher gear I had higher EGT on hills. By reducing the EGT a little with KB’s Induction Kit I feel comfortable running in the OD gear and dropping the RPM’s. And, with the other mods I have installed including a larger exhaust, it only seems logical that the much improved air induction path will lead to better efficiency and power.

I’m traveling to SEMA in Las Vegas next month & I’m anxious to see what mileage gains I’ll get at higher speeds. Overall, I’m happy to have the Induction Overhaul Kit already installed, and with very little effort or trial & error. For anyone interested in better performance, mileage, and less heat, I’d say this is a must do.

Did you get the modified LBZ mouthpiece with your Induction Overhaul Kit?

Dude... if I were a betting man, I'd bet this thread gets closed, 'cause KB is a banned member (apparently he is the original "He who shall not be named").

We've been discussing these various concepts in a sanitary and acceptable manner over in the "Seen this yet II" thread. We're looking at this from the LBZ/Kodiak turbo duct angle, along with some minor variants. You're welcome to come over and discuss those things there... as long as "He who shall not be named" isn't mentioned. Censored

I didn't get a Kit from Killer Bee, but I did learn a lot from his research and the input other gave him.

With the stock intake box with the fender cut to let air in the side opening, the front of the box cut out behind the headlight and the plastic behind the headlight (not part of the airbox) also cut as big as I could. It would bury the 1600* pyro easily and would only give my 36psi of boost out of my 71mm Cheetah. Cruising it was holding at least 675*, usually higher. I ran a best of 12.85 @ 104 pass with this setup but ran a handful of other 12.8X runs.

Threw an LBZ inlet elbow and a *Staff edit* S&B LBZ intake. I ran the same exact tuning and truck setup and saw 50psi of boost but it now holds a steady 47. On the street I would roll into it and watch boost vs EGT - at a steady 40psi it held 1000*; 45psi gave me almost 1200*; cruising it stayed just under 500 to 550* now depending on speed; and in a flat out WOT throttle run it got up to 1400* and then dropped to just over 1300* and held it. I took it to the same track, temperature and humidity was very close to the same, ran the same exact tuning, tire pressure, everything - the only change was the inlet and intake. I ran two back to back 12.53 @ 107 passes on my first runs of the night. I was shocked that an intake and inlet dropped .32 seconds and added 3 mph to my trap speeds. I also saw EGTs around 1400* - which in 4WD WOT is awesome.

Edit: didn't know I couldn't mention Killer Bee on Diesel Place, getting ridiculous how political things are getting over here. How much work and research KB has put into this deserves mention - if the mods here are more worried about grudges, politics, and people with hurt feelings they can ban me to. I'll do just fine on the other DMax forums that care about what matters.

OTHRGRL,

great report - I've seen probably a .3 - .4 mpg increase that I can directly attribute to the LBZ mp. I have an aftermarket intake that I don't think is very efficient as far as insulating itself from the hot air in the engine bay. I need to do further modifications -- maybe my stock airbox or an lbz s&b intake.

Hey guys, Can anyone tell me what size the non turbo side of the lbz intake is, wondering if I can mod my lly banks ram air to fit? Thanks

Did you get the modified LBZ mouthpiece with your Induction Overhaul Kit?

Yes, I went with the modified mouthpiece to get as much advantage as I could. My exhaust has been replaced with an MBRP stainless which is larger, and is very much more "open" and free flowing - and I wanted to complement that with the best intake I could put on it. I also have a modified cold air intake. The combination is a huge improvement over what the system came with. I also replaced my MAP sensor in case it had been heat damaged by the very high intake temps in the past. I drove it out of town today and even though I haven't put enough miles on it yet to do a hand calc. of the mileage, the DIC showed a higher avg. mpg than it used to for the same trip. Again, I'll have to get it on the hiway for a longer trip so I can get better calculated data. Seat of the pants it does feel stronger, and like it is spooling a little faster and easier.

Dude... if I were a betting man, I'd bet this thread gets closed, 'cause KB is a banned member (apparently he is the original "He who shall not be named").

We've been discussing these various concepts in a sanitary and acceptable manner over in the "Seen this yet II" thread. We're looking at this from the LBZ/Kodiak turbo duct angle, along with some minor variants. You're welcome to come over and discuss those things there... as long as "He who shall not be named" isn't mentioned. Censored

Jesus Christ, the info flying around is so comical, and I can't figure out how KB managed to bamboozle everyone into thinking he came up with all this stuff.. . .. I do not understand the need to "give KB credit" on this thing when he is not the guy who came up with it.

First things, lets give credit where credit is really due. KB was the first that I know of to come up with porting out the LLY intake duct, but he is NOT the originator of the idea of the LBZ intake duct on the LLY. He was busy pushing the idea of porting the LBZ intake and others came up with the LBZ intake duct. GM started the whole thing by putting the LBZ air filter box on overheating LLY's then it naturally grew from there to include the rest of the GM pieces.

Last December 2007 DP member 'kylant" made the swap on his LLY to the LBZ duct: http://www.dieselplace.com/forum/showthread.php?t=123809

"kylant" was the very first person that I have ever seen or heard of making the duct swap. It was "kylant" making all those changes to his intake tract that triggered me to want to change the whole thing. So "kylant" is the true originator of the LBZ duct. But if not him then "Diesel Pilot" is.

Well after "kylant" made his swap and during KB's pitching of the LLY porting "Diesel Pilot" in March 2008 on McRat's board in a thread called "Compressor Efficiency Problem" re-discovered the LBZ duct and its larger size that he was mounting on his truck, start at post #197 and continue forward:

http://208.109.104.11/forum/showthread.php?t=2003&page=20

"Diesel Pilot" provided all the info to KB, and somewhere after that in May 2008 all of a sudden KB claims to be the originator of this idea and runs with it. I don't get the hoopla over the whole thing, its great but KB didn't invent it, GM did, and he didn't discover it, others did, and the parts are readily available from the source, which is GM. Sheesh.

If you REALLY want the most you can get out of this intake duct idea, have a little patience and don't blow your money and time on the LBZ or Kodiak pieces, I have a real setup coming that has been on the drawing board for a very long time that isn't just factory parts replacing more factory parts, its specifically designed to flow the maximum allowed by law LOL! ;)

[quote=TxChristopher;2813867]Jesus Christ, the info flying around is so comical, and I can't figure out how KB managed to bamboozle everyone into thinking he came up with all this stuff.. . .. I do not understand the need to "give KB credit" on this thing when he is not the guy who came up with it.

First things, lets give credit where credit is really due. KB was the first that I know of to come up with porting out the LLY intake duct, but he is NOT the originator of the idea of the LBZ intake duct on the LLY.

Wooooo - I see the egos here have not changed since I quit coming on the site a year ago, after being an avid member for a couple years.

I could care less about the self envy that is evidently still here. I really enjoy my truck and am committed to finding ways to improve it. And, the LLY lends itself well to needing improvements.

I chose this mod because it looked well thought out, was available, had complete instructions, was an easy install, and according to many others that had been following the development - was a dramatic improvement over what GM sold me in the first place. Sorry if it ruffled your feathers, but I'm just trying to share my experience with the rest of the forum members that have helped me so much in the past.

Randy: Thanks for the heads up on the additional site. I've been looking at it and again, pretty interesting reading.
Thanks

Wooooo - I see the egos here have not changed since I quit coming on the site a year ago, after being an avid member for a couple years.

I could care less about the self envy that is evidently still here. I really enjoy my truck and am committed to finding ways to improve it. And, the LLY lends itself well to needing improvements.

I chose this mod because it looked well thought out, was available, had complete instructions, was an easy install, and according to many others that had been following the development - was a dramatic improvement over what GM sold me in the first place. Sorry if it ruffled your feathers, but I'm just trying to share my experience with the rest of the forum members that have helped me so much in the past.

Hello, I didn't mention you anywhere eh? Who got feathers ruffled? Me thinks you did. ;)

Blahahaha nah not self envy, just disbelief at the ridiculous hype and the continuation of the followers to push it.

I agree the LLY is great for improvements, and everyone will continue to help each other for sure, thats the whole idea. :)

We will be doing airflow testing on all 3 setups or maybe even 5 setups to determine which is the best, rest assured. The beauty of this site is that the cream always rises to the top given time. .. .. ... .

Has anyone run an actual dyno test on a truck with the stock LLY intake vs. one with a stock airbox modified for cold intake and an LBZ modified mouthpiece. As I understand it, this requires no reprogramming for the MAF sensor. Very painless, quick and easy setup.

I don't have the modded LBZ mouthpiece, but a stock LBZ mouthpiece with an LBZ S&B intake took me from consistent 12.8s to consistant 12.5s with no other changes.

Moved to Air Intake upgrade section!

Hi All,

There is an original thread (from another site - started in November of 2007) that discussed the original discussion of the LLY restrictive mouthpiece and what can be done about it .... unfortunately this site will not allow a link to it .... pm me if you are interested.

From a technical standpoint it provides a good chronological history of this modification from profiling the restrictive LLY MP to ways to deal with the restriction ....

Has anyone run an actual dyno test on a truck with the stock LLY intake vs. one with a stock airbox modified for cold intake and an LBZ modified mouthpiece. As I understand it, this requires no reprogramming for the MAF sensor. Very painless, quick and easy setup.

Did you get the whole kit from KB?

Did you get the whole kit from KB?

Yes, with only a couple months of towing remaining, and a couple long trips to take the best advantage of performance, heat and mileage improvements I did not want to be playing around with finding parts, adapting flanges, finding the right materials to withstand the rigors of the LLY underhood conditions, and practicing with grinding and possibly ruining a rare LBZ mouthpiece. Ordered the whole kit and had it installed in less than a week. ---- Done ----. Couldn't be happier.

Does anyone have any data on air temps from modified 5.3/6.0 airboxes modified with a 4" downtube to the marker lamp area behind the bumper. Mine is drawing air from there, and from the thru the fender area. With that much area to draw from, air flow should be slow enough to limit velocity and any moisture intake problems. However, I've not tested the intake air temps at the MAF to assure myself that it's a genuine "cooler" source of intake air. I want to make sure that my air going to the modified LBZ intake is cool enough to be efficient with my new Modified Induction Overhaul Kit.

I got the idea from "Kylant". He was definitely the first person to ever put an LBZ inlet on an LLY.

I took the idea to another forum, where there was a lot of discussion about modifying the LLY inlet. While others were trying to model entirely new intakes, I figured why not try one off the shelf first.

I want to say thanks to the MODS for letting this thread continue, no harm or foul has been done here just lots of good info being shared. Everone keeps our cool and we might ALL learn something!

I want to say thanks to the MODS for letting this thread continue, no harm or foul has been done here just lots of good info being shared. Everone keeps our cool and we might ALL learn something!
Thanks for the thank you man, We read it, and sure do appreciate it.
The one 'tiff' I have over this is - if you're NOT a supporting vendor, you CAN'T plug your stuff on this site. Other than that, I've learned quite a bit, this is a pretty informative post. Let's keep it going!
- Jason

Thanks for the thank you man, We read it, and sure do appreciate it.
The one 'tiff' I have over this is - if you're NOT a supporting vendor, you CAN'T plug your stuff on this site. Other than that, I've learned quite a bit, this is a pretty informative post. Let's keep it going!
- Jason

I am not a supporting vendor, and this is not "my stuff". However, I believe I can plug an effective product when I see it, try it, and find it to have legitimate value to our membership. But, this thread has been moved to the depths - out of the mainstream where those honest enthusiasts may look to find a simple and quick solution to an admitted and obvious LLY engineering boondoggle. The thread is a dead puppy.

The Induction Overhaul Kit may not be the least expensive, but in most cases for a large number of the membership it is an extremely effective & quick cure requiring very little additional time & cost.

I'm towing this weekend, and golfing with adult beverages. Monday I will return to a very full week of work with a smile on my face knowing my problem is solved without further hand wringing. Fall, winter, and cool weather are upon us, and I have this challenge conquered.

Enjoy -

I would have to say that this should be in the LLY forum. It isn't a power and performance mod but rather a simple mod to help solve the LLY overheat issue and help economy.