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Project 350HP update

6.5quest said:
I will call Charles the owner of the company and see what he has to say. However it really makes no difference to us if it does or doesn't have a built in heater. We are looking for a consistant fuel pressure with no air/water in the fuel and that is our main concern. Maintaining factory equipment is a plus so long as it can be made better as we have been able to do in this case.
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True, but, if you lived in Alaska it would be very important to you! ):h
 
North Maine said:
Ian, I noticed the Balance Flow system available for Hummers (for like 800 bucks!) that is made by heath but distributed by another vendor is on the truck... Everyone (include Bill I think!) says "works well but isn't necessary"... is this true, I have trouble believing that if you have it on this truck. What are your thoughts on this piece?
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I bought the 'Balance Flow" system maybe 4 years ago or more. And for what I paid for it, I'm leaving it! The high volume water pump get the coolant everywhere it is supposed to go and then some!

I have a Teton fifth wheel and the combination weight of my trailer and pickup is just under 24,000. We have a lot of long hills out in this area and I want to keep the coolant temperature down while making sure all parts necessary are getting the what is needed.

The "Balance Flow" system is staying!

Last time I looked, and it has been quite a while, Heath was still selling this in the Hummer section.
 
People, I use my pickup, my neighbor was driving his loaded dump truck and pulling his loaded trailer when the engine quit. I was behind him at the time and pulled him home. This wasn't an 80,000 pound rig, only about 60K. And I pulled him home, in low range, about 6 miles and that includes up the long steep grade. Didn't go real fast, actually went very slow, but I got him off the narrow 2 lane highway, with no shoulders, and back to his residence. Another reason to have the balance flow system as far as I'm concerned!
 
6.5quest said:
I had them preset it to 15 psi from the factory but it is one of there new units with the adjustable pressure regulator built in so we can fine tune it if need be. We are also going to be running a Danin Optix fuel pressure gauge to monitor fuel pressure on the fly. I found when running the quarter mile in my truck that I ran out of fuel the last hundred feet or so even with a better than factory fuel pump. With this new pump set at 15psi I doubt we will drop to even 14psi under full load. These AirDog systems are the best on the market and almost an over kill for the needs of the 6.5 but since the were kind enough to sponsor the pump I am not going to turn it down. Plus they found a 35hp gain in midrange power on a D-Max just from having the air removed completely from the fuel, so who knows what it will do for a 6.5.
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I Think you made the right choice there. I think once the 15psi goes through the flt mgr and everywhere else, it will drop considerably anyway. I think that may be close to the magic number for these IP pressures.

If 14 PSI at the IP is safe, then 15 at the LP should be fine, however with the AirDog setup, the 15 PSI is created after the pre-filtering I think????? So you're not taking a hit there where you probably would with a non built in unit, where the 15psi would lose pressure to pull through a pre-fiilter, then lose pressure again to push through the flt-mgr, which takes up a few PSI usually, however I don't have FTB done yet to base my comparisons on that.

Not sure how much a pressure save if any FTB does, or if its merely a volume save.
 
We did the FTB mod on the recommendations of a few well known forum members and because it just makes sense. Why not allow all the fuel possible to the IP, it will decide what it needs and send the rest back to the factory filter. We are also going to eliminate the prefilter sock in the tank. Since we are now using an even better prefilter in the AirDog there is no sense letting that thing ever clog up again.
 
Maybe you want consider doing that, it will add some power and fuel table what i use allows doing it without causing on/off throttle feeling. kane, kuutio (and i think slim shady too) have optic bump and they are happy how throttle works.
 
6.5quest said:
We did the FTB mod on the recommendations of a few well known forum members and because it just makes sense. Why not allow all the fuel possible to the IP, it will decide what it needs and send the rest back to the factory filter. We are also going to eliminate the prefilter sock in the tank. Since we are now using an even better prefilter in the AirDog there is no sense letting that thing ever clog up again.
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I have done the same with the in-tank sock, and couldn't agree more with that idea.
 
kojo said:
Maybe you want consider doing that, it will add some power and fuel table what i use allows doing it without causing on/off throttle feeling. kane, kuutio (and i think slim shady too) have optic bump and they are happy how throttle works.
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Do you know what the optic bump does to help? Im curious.
 
buddy said:
Do you know what the optic bump does to help? Im curious.
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The Optic bump is not for the faint of heart, It increases fuel to the injector event, and timing of the injector event. That is the short and dirty explanation. It also makes the fuel pedal very touchy and if you do the optic bump incorrectly you can make your truck run erratically and rough at idle. All this and the computer doesn't know the extra fuel and timing is there. not recommended for someone that doesn't watch their egt.

Possible side effects? melted pistons or pre ignition, early failure of your IP.
 
Slim Shady said:
The Optic bump is not for the faint of heart, It increases fuel to the injector event, and timing of the injector event. That is the short and dirty explanation. It also makes the fuel pedal very touchy and if you do the optic bump incorrectly you can make your truck run erratically and rough at idle. All this and the computer doesn't know the extra fuel and timing is there. not recommended for someone that doesn't watch their egt.

Possible side effects? melted pistons or pre ignition, early failure of your IP.
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Oh yeah! But damn, it feels good while the fun lasts.
 
well, not planning to mess with the OS yet. But for more fuel, do you mean on the top end? Like PCM is commanding 80mm3, but 90mm3 is actually going in? Under 80mm3 I can just program it to give me when its desired. Same with advance, which you can program up to 25 degrees theoretically.
 
buddy said:
well, not planning to mess with the OS yet. But for more fuel, do you mean on the top end? Like PCM is commanding 80mm3, but 90mm3 is actually going in? Under 80mm3 I can just program it to give me when its desired. Same with advance, which you can program up to 25 degrees theoretically.
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Through the whole fuel curve. and timing curve. The pcm does not see the extra advance or fuel, command 3mm3 and you may be really getting near 7 mm3 although the pcm only recognizes the 3mm3 fuel and advance called for in the program. Very dangerous and not for the faint at heart.
 
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