Im trying to change my ifr and im stumped the settings now are 3.18 from 0 to 80 kpa subtracting comes to 0 my new inj are 10.97 g/s do I just put that across the 0 to 80
Im trying to change my ifr and im stumped the settings now are 3.18 from 0 to 80 kpa subtracting comes to 0 my new inj are 10.97 g/s do I just put that across the 0 to 80
Are you return or returnless? That will dictate how you setup the IFR and offset table.
Email Tunes, [email protected]
96 TA Blown/Stroked, 4L80E/Fab 9
15 C7 A8 H/C 2.3 Blower/PI
14 Gen 5 Viper
Custom Mid Engine chassis, AKA GalBen C
Its return. I,m using a vette filter instead of the original vacume refrence regulator.
return is the same values across.
Email Tunes, [email protected]
96 TA Blown/Stroked, 4L80E/Fab 9
15 C7 A8 H/C 2.3 Blower/PI
14 Gen 5 Viper
Custom Mid Engine chassis, AKA GalBen C
Ok . Thanks for the info.
Only if there is a vacuum/boost referenced regulator.Originally Posted by Ben Charles
Russ Kemp
Ok. I have a 408 with a TBSS intake and fuel rails and I have the corvette filter with the internal regulator which returns fuel. So should my ifr be linier or graduated. If graduated what would I start at. The injectors work out to 10.97 g/s @ 58psi
87.1 lbs/hr at 0 kpa & 95.4 lbs/hr at 80 kpa. Then interpolate between horizontal bounds.
Russ Kemp
Thanks Russ.
When i interpolate between the horizontal bounds its reducing the values till it gets to 80 where i have it set at 12.0 it drops from 10.9 @ 0 to 3.18 @ 75 why is it not raising to match to the 12.0 I got it figured out.
Last edited by JDC; 08-05-2013 at 01:50 PM.
No idea what your trying to do, post your tune.
Russ Kemp
I got the settings figured out. But what confuses me is the vac to pressure its like its backwards . 0 vac should be wide open throttle and 80 closed. why would the pressures not be the other way higher at 0 and go lower to 80. ?
Absolute pressure, remember atmosphere (0 vacuum) is ~ 1 bar or 100 kPa
'12 Camaro T3 2SS/RS LS3 M6, SLP TVS 2300, Flex Fuel
Ok I think I got how it works now. So 0 kpa would be full engine vacume. Thanks for that info.
I apologize for hijacking, but I am trying to make sure I understand. In absolute values (of negative pressures below atmospheric) 0kpa would be 0kpa and 80kpa would actually be -21kpa gauge pressure? I am old and it does get confusing, lol. I wonder why they base it this way instead of gauge pressure. Is the IFR the only table that is constructed this way?
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