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GM 07-09 gas engines Expand / Collapse
Anyone with results good or bad about GM cars...
Poll ResultsVotes
getting results
 
57.14%
4
not getting results
 
42.86%
3
over looked something
0%
0
Member Votes: 7, Anonymous Votes: 0. You don't have permission to vote within this poll.
Author
Message
Posted 8/26/2008 2:46:35 PM
Supreme Being

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Last Login: 12/23/2009 8:20:27 PM
Posts: 90, Visits: 107
I have done extensive applications to a 08 Chevrolet p/up w/4.8 engine. Running a box, efie,PVC enhancer well the work. Have used several different cells. Now using an 8 cell box. I have not had one mile per gallon gain with this vehicle. Any clues?
I was just told that GM uses a Box computer (?) and it does not work on them. Any comments from anyone?



03 honda odessy just complete no results yet
97 cummins 15 before 24 now with a banks intake installed also
95 cummins extensive modifications to engine. 17 before 27 now. 2whl dr. 5spd
99 cummins a lot of cummins about 7mpg gain
08 isx cummins Volvo 1.5 gain aver.8mpg
03 camry toyota before 28 now 49mpg
Have done over 20 cummins modifications
Post #4456
Posted 9/10/2008 1:16:25 AM
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Hi I have a 2004 1500 5.3 liter with a vort silverado crewcab.

I have three 64 oz jars that use rods that are conacted to a four tee and then it is split up with one hose going to the right side of engine just the other hose gose in to the mass air after the maf sensor.

I have a map/o2s wraped and exteders and efie.

I also can use  map to controle the maf but I found that no gain when I used it.

I had been using two tablespoons of baken soda in each jar but now trying two and half table spoons.

I tryed the haoh but I blow fuses even after I premixed it 1 tsp/liter.

I then went with less then 1/4 tsp per jar and still blow fuse.

I have read and been told to get the jars tell the are hot to the touch so do I raise the baken soda to more or less to get them hot.

I did manage to get up to 22-23 mpg but now am fighting to stay 20-21.

I have pictures of my set up under silverado.

Lately after driving a while and come to stop I have noticed the truck to idle ruff and feel like it wanted to stall.

I can get the truck up to 24-28 but not long enough to get good mpg because the ecu kicks my down to under 20 and then I use the map to try to get back in the 20.

Manuel Varela

duh1 IL

Post #4645
Posted 9/13/2008 7:06:20 PM
Supreme Being

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Last Login: 12/23/2009 8:20:27 PM
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Pretty frustrating isn't it?

I think I'm just going to go to an all new system, Someone is designing. Can't say who, but if it works I'll let you in.

I was told that GM computers are called the box, and they don't work. The only thing I know that will work now is a size 8 hammer. Will let you know later.

keep on truckin

Whgoose
Post #4727
Posted 10/4/2008 7:33:48 PM
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SILVERODO MPG HUNTER, LOOKS LIKE WHERE HAVING A HARD TIME INCREASING OUR MPG .I HAVE 1 ELECTROLYZER GOING TO 3 ,MAP AND MAF ENHANCERS AND WARPED OX SENSOR . SHOULD I TRY OX SENSOR ENHANCER .ANY HELP WOULD BE APPRECIATED THANKS NICK A
Post #5108
Posted 3/3/2009 9:25:14 PM
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I have a 2000 Yukon 5.7 li and have had no success.  Have you had any luck with your GM projects?
Post #6127
Posted 3/4/2009 12:53:35 PM
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Last Login: 11/18/2011 12:44:47 AM
Posts: 536, Visits: 2,963
Halito My Friends,

Well, it looks like my prayers have been answered and my search for a knowledgable person to help me have been answered!! So, I have some exciting news to share with you all.

I have an Electronics Engineer with a Masters degree in physics who is very interested in my work with H.H.O.. He says that the ECU is a "piece of cake" and has also suggested what might be a quick, easy fix to the air/fuel problem. He has asked if I would let him work with me in developing solutions to our problems. I told him no. (Yeah, RIGHT!!)

So, I would recommend to all of you, if you would like to keep abreast of all developments that we come up with, "click" on my user name, go to my profile and "click" on my website.

When you are on my website, join our mailing list so that we can share all of our new developments "as they happen".

We currently have three projects "in the mill". One is a method to keep the "electrolyzers" from freezing during sub-zero temps (this would apply to the "drycells also.) Another is an inexpensive way to change the air/fuel ratio without messing with the ECU's. And, of course, there's the ECU itself.

I apologise for having to do it this way, but my website is keeping me so busy, I don't have much time to come into the forum and post developments here and to my subscribers also. Plus, I feel that this would be a good way for ALL members to be able to keep up with what's going on at my end of the research. Granted, we will be offering our new developments as "installations for sale", but for the ones who have the mechanical abilities to "Do It Yourself", we will be putting all of the information into our newsletters, so that you can do it yourself, with very little expenditure.

All of the "Old Timers" in this forum, know that I don't believe in "pushing" (or spamming) other members in this forum, but I'm so excited about this new development, I just wanted to let everyone know.

Love and Respect,

Walking Eagle, Last of the Visionaries

Bakersfield, CA

Post #6129
Posted 3/11/2009 10:23:25 AM
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Last Login: 8/11/2010 12:43:08 PM
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It has been a while since I have posted here and have been experimenting and trying to get my H.H.O. system to work on my 96 Chev 5.7L Silverado.  My mileage has been pretty bad (10-14 mpg) and nothing seemed to help for long.  I have tried about all the things I have seen posted here and on other forums, but just couldn't get results to stay up.  My last try, before current system was - 4 qt jars with switch plates in each. Gas production was good, but found main problems were overheating, gas leaks, high amps, etc. I do realize that most of my problems were self induced, but still very frustrating to not be able to keep gains.  I will say that Walking Eagle's lids are a huge improvement over any others that I had tried and helped a lot with leak stoppage.   I finally went back to the drawing board and decided to try Mindstrain.com 's plan and see what happened.  I built a cell using a 2 1/2 gal bucket  with 6 plates (+-++-+) and using only well water and 1/8 tsp salt in 2 gal of water.  My system is basically just like the one he has in his S-10.  My cell runs cool and draws only 6 amps when warm.  I made my first tests yesterday on about a 100 mi trip and mpg averaged 19 mpg for first leg of trip with efie turned off and just cell hooked up to air intake manifold.  On return leg, I decided to turn on the efie set to 170 mv and got almost the same 19 mpg.   SO What does this prove???   I am still testing and am hoping that mpg stays up.  I will try to increase mv on efie and see if that makes a difference and maybe change the electrolyte as salt and well water do seem to make quite a bit of muck at bottom of my cell.   Will let you know as testing continues. 

waterboy1  N. C.--1996 Chev K1500 w/ 5.7L eng.
Post #6154
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