[2ndGENcoal]

hi i have a 2001 cummins with a built tranny and 150gph lift pump along with 5" exhaust. i dont have any electronic add on's yet cause idk what the best is out there. i have stock injectors and vp44. but i plan on adding lightining injectors in the next few months. so if you guys could give me some info on the best tuners or stacking combos out there for the best power/smoke it would be great. sorry guys im new at this stuff so dont hound on me please

 

[jmd025]

http://www.cumminsforum.com/forum/9...iscussion/202233-chip-stacking-look-here.html

http://www.cumminsforum.com/forum/9...05321-performance-electronics-hp-ratings.html

 

[2ndGENcoal]

thanks man. but i need more help on what to pick from? like idk what the best combos are like what works best with what ya know?

 

[c farmer]

I will say a tst comp and power puck. They work very well together.

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[DodgeMech]

Quad adr or edge comp or tst with a smarty are the popular choices

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[2ndGENcoal]

i know the smarty but the tst? what adds the timing and what one will just add fuel? cause if i recall tst adds timing also right? or can you adjust that like the smarty? because i have a buddy that has a 99 with the hot comp and smarty stack and he loves it

 

[c farmer]

The tst is fuel only. Run the smarty and have fun. :beer:

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[2ndGENcoal]

now i hear this stuff about the smarty changing the duration pulse width and stuff like that? whats all that now? i thought it was just 1-10 choose ya know?

 

[c farmer]

Tst is a very simple fuel box but not well known. Very powerful. I think people are afraid of it. :thumbup:

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[mjd91]

You need to read!

 

[2ndGENcoal]

alright. but what bout the smarty now?? hows all the tuning work on that? like i said in my last reply i have no clue??

 

[2ndGENcoal]

i have been reading there. i figured id ask more from you guy hoping you will give me more info on it because i have no clue about it?? so cut me some slack like i asked please? idk if its just pick 1-10 numbers on the smarty cause i know about the odd and even numbers i just dont know bout changing all that other people talk about?? do you have to? cause idk how to tune that stuff or how it works

 

[DodgeMech]

Pulse width can't be changed on the vp trucks because of the mechanical injectors

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[Wy Elk Hunter]

Pulse width can't be changed on the vp trucks because of the mechanical injectors

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I'm confused, I understand our injectors run off a cam, and the lobes determine the duration. But then what doe's the ECM on the VP44 do exactly???

 

[DodgeMech]

The vp controls duration by keeping line pressure over the pop pressure for x amount of time...and no...b series injectors are hydraulically actuated by fuel pressure not cam actuated

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[Wy Elk Hunter]

The vp controls duration by keeping line pressure over the pop pressure for x amount of time...and no...b series injectors are hydraulically actuated by fuel pressure not cam actuated

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I guess I'm thinking old school. You said pulse width with can't be changed, then said duration is controlled by the vp. Pardon my ignorance, but arn't they the same???
Thanks

 

[Cleftwynd]

From what I can tell they are the same, pulse width is how long the injector stays open, measured in ms. For example at idle the pulse width could be 2.5ms, meaning the injector is open for 2.5 milliseconds.

I also thought that is what the duration is.

 

[sawdustmaker]

 

[DodgeMech]

I guess I'm thinking old school. You said pulse width with can't be changed, then said duration is controlled by the vp. Pardon my ignorance, but arn't they the same???
Thanks

Good point...i think they are basically the same thing but pulsewidth has to do with how long an electrical signal is sent to a solenoid like on top of a cr injector and duration is how long the fuel "signal" is sent to a mechanical injector...clear as mud? Haha

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[Djones]

My buddy had the Edge comp drag box stacked on a smarty and it actually dyno lower hp then with just the edge comp alone.