1dirtyZ

iTrader: (1)

under the fule tab in ls1 edit there is the injector flow rate button, in that table the flow goes from 0 Kpa to 80Kpa , i'm assuming 0 kpa is idle?? and 80 kpa is wot?

or is 0 kpa the value for WOT ( 0 vaccum or boost) and 80 is idle?

or are these numbers reperesenting fule pressure?

<small>[ December 19, 2002, 05:58 PM: Message edited by: 1dirtyZ ]</small>

red ws6 99

no, they are representing the pressure in the intake manifold. The computer assumes you are running 58 psi. As you go toward WOT the pressure in the manifold goes up, the computer has to correct for this delta change in pressure (manifold vs fuel pressure).

Gary

1dirtyZ

iTrader: (1)

so on my supercharged motor the last cell on the left side of the table wold be the " under boost " or WOT cell??

Ellis1

yes.

red ws6 99

It depends if you are running a vacuum/boost referenced pressure regulator then you would keep all the values the same. If not then you will have to tweak all the settings based on how your fuel pressure drops/increases over the rpm range, since that will affect on how much the injectors flow.

Gary

1dirtyZ

iTrader: (1)

just out of curiousity, what would be atmosperic reading? (i.e. 0 vaccume?)

so if i'm tunning the flow of injectors as the rpms go up i would tweak them ( cells) from right to left. i.e. idle =80 kpa .....wot= 0 kpa.

another simpler question would be : what cell represents idle?

it kinda feels weird as to why the table starts from the end(WOT) and goes to idle.

red ws6 99, you said :"As you go toward WOT the pressure in the manifold goes up" i'm assuming you are talking about a F/I motor.

<small>[ December 19, 2002, 09:35 PM: Message edited by: 1dirtyZ ]</small>

Kevin V 2002 SS

Where are these "cells" located and how do you view them and know which one is which???

red ws6 99

o kpa is idle and WOT would be the higher number. The same thing happens on a FI car like mine, but the computer can not read above 1 bar= 1 atm = sea level pressure. So you go right to left.

14.7 psia (sea level) = 101 kpa

1 psia = 6894.8 Pa = 6.8948 KPa (Kilo pascals)

As you go toward wot pressure goes up so the delta pressure across the injector increases. This means the injector can flow less, so you have to tell the computer how much less.

Gary

1dirtyZ

iTrader: (1)

thank you very much Gary !
thats exactly the explenation i needed to know.