No improvement

[Jamesleaper]

Ive connected the hho up to the end of the air intake filter and i am still getting the same mpg, is there a particular place on the air intake that i should connect it?

[cabrera]

If you have an ECU controlled car you require an EFIE to control the O2 inputs to the computer. HHO will read at the O2 sensors as a lean condition and the ECU will dump more fuel to compensate thus negating any MPG benefit

[Jamesleaper]

If you have an ECU controlled car you require an EFIE to control the O2 inputs to the computer. HHO will read at the O2 sensors as a lean condition and the ECU will dump more fuel to compensate thus negating any MPG benefit

I thought you only needed that for a car that runs on Gasoline, my car is deisel?

[cabrera]

I didn't know you had a diesel setup.
You are correct, you don't need an EFIE when you install an hho generator on a diesel. You only need an efie on fuel injected gasoline vehicles.

Not knowing the configuration of your setup or vehicle makes it difficult but I would looks to see what is your HHO LPM output vs engine displacement also make sure you are getting the proper LPM at the intake.

My intake is the black hose on the right connected right before the throttle body:

http://72.35.72.219/~library/26171/stuff/17.jpg

Very similar to the connection I found on a 6.6 Duramax installation.

http://www.hhoforums.com/attachment.php?attachmentid=1555&stc=1&d=1272987600

[Jamesleaper]

I didn't know you had a diesel setup.
You are correct, you don't need an EFIE when you install an hho generator on a diesel. You only need an efie on fuel injected gasoline vehicles.

Not knowing the configuration of your setup or vehicle makes it difficult but I would looks to see what is your HHO LPM output vs engine displacement also make sure you are getting the proper LPM at the intake.

My intake is the black hose on the right connected right before the throttle body:

http://72.35.72.219/~library/26171/stuff/17.jpg

Very similar to the connection I found on a 6.6 Duramax installation.

http://www.hhoforums.com/attachment.php?attachmentid=1555&stc=1&d=1272987600

lOOKING AT THAT PICTURE, ON THE END THERE IS A FILTER AFTER THAT A SENSOR, MY FILTER IS HOUSED IN A CONTAINER WHICH IS STEEL, I HAVE DRILLED INTO THAT AND CONNECTED TO THAT POINT, I NOTICE YOURS IS PASSED THE FILTER ON THE END AND SENSOR, MAYBE I SHOULD MOVE IT CLOSER TO THE THROTLE LIKE YOURS.

[cabrera]

I found that it is best to be as close the the TB as possible, passed all filters & any hoses that might be attached. Make it the last input into the TB. Also take the flow of the intake into consideration. It may not make a difference but I do this as a rule. place the HHO inlet so that it easily goes with the air flow not fighting against it. So visualize the flow and if needed shape the inlet tip to direct the gas flow into the TB.

My inlet barb was tapered like this to force the flow towards the TB
http://www.hhoforums.com/attachment.php?attachmentid=1556&stc=1&d=1272998043

Any Diesel guru guys out there want to share some knowledge?

[Jamesleaper]

I can only offer what I've experienced with the Ford and Chevy big diesel engine I worked on. With the Ford I was able to mess with the MAF to add more gain, the older diesel from what I understand you can manually retard the injector timing, the newer model like the 1999 F-350 I did you need a computer to talk with the ECU to retard the injector timing.

I am not sure what type of vehicle you are working on. Try to find out how to adjust your injector timing. Also, with diesel I found trying to match liter per liter is best for gain. The F-350 I had to induced 4 lpm to the 7.3 liter engine. The chevy Suburban was different 3 plm was find to the 6.5 liter. It is now experiencing 33% gain on highway, smooth running and quieter engine.

Andy,
Have you played at all with the MAF on the vehicle you're working on?

I dont know what the MAF is, i think i need some tutorals on Maf and injector timing, do you think this is something an ametour can do, i am machanically minded but not a mechanic, if you have any suggestions, i would appreciate it. thanks jim