Correct Tuning table for 42 # Delphi
Originally Posted by RedHardSupra
if i recall correctly, ls1 edit shows IFR in absolute pressure, not vacuum, so it's 'backwards' from the way hpt/efilive does it, so yes, you start with smaller numbers and it goes up numerically.
Thanks
Ron H
think about it: during deceleration you will get 20, maybe 15kPa of absolute pressure (or ~80-85kPa vacuum), never 0 (absolute vacuum). during acceleration you will get close to 101kPa absolute pressure. so with the IFR scale going from 80-0, that means it is in absolute pressure, and it goes from deep deceleration to wot (that's HPT/EFI). so the short answer is that the WOT IFR is at 0 vacuum, or ~101kPa (depends on baro) absolute pressure.
my concern is, why would you be changing just one value? you're not just tweaking IFR to get correct fueling, are you?
my concern is, why would you be changing just one value? you're not just tweaking IFR to get correct fueling, are you?
Originally Posted by RedHardSupra
think about it: during deceleration you will get 20, maybe 15kPa of absolute pressure (or ~80-85kPa vacuum), never 0 (absolute vacuum). during acceleration you will get close to 101kPa absolute pressure. so with the IFR scale going from 80-0, that means it is in absolute pressure, and it goes from deep deceleration to wot (that's HPT/EFI). so the short answer is that the WOT IFR is at 0 vacuum, or ~101kPa (depends on baro) absolute pressure.
my concern is, why would you be changing just one value? you're not just tweaking IFR to get correct fueling, are you?
my concern is, why would you be changing just one value? you're not just tweaking IFR to get correct fueling, are you?
Thanks for the info, and I've read and am still reading your tuning info. Getting me closer to having a better idea whats going on.
sorry for bumping ancient post....
would you have to adjust injector pulse width at all for this?
i have the 42lb lucas injectors pn #621031 and wanted to get this dialed in as close as possible before attempting to reinvent the wheel.
Thanks!
i also ran into a table that goes over the injector data, but i'm not sure how accurate it is. can anyone confirm if these min and default injector pulse width figures need to be input into the pcm for the injectors to work properly (they seem kind of low)?
would you have to adjust injector pulse width at all for this?
i have the 42lb lucas injectors pn #621031 and wanted to get this dialed in as close as possible before attempting to reinvent the wheel.
Thanks!
i also ran into a table that goes over the injector data, but i'm not sure how accurate it is. can anyone confirm if these min and default injector pulse width figures need to be input into the pcm for the injectors to work properly (they seem kind of low)?
Last edited by BobDoLe; Aug 29, 2008 at 02:31 PM. Reason: bah
