Mislabeling: IFR & IPVA Row Labels

[Redline Motorsports]

2007 Corvette OS #12611833 still has old axis........

[Redline Motorsports]

Does it make sense that the LS9 injector is at 7.11 grams/sec at 400 (with old axis) and 7.11 grams/sec at 468 with new axis???

Trying to setup a 2007 file with 52#'ers and used the spreadsheet you made Joe and opened a 2010 file that I had 52's in and thats where the comparision is coming from....

[joecar]

2007 Corvette OS #12611833 still has old axis........

Can you post the file.

[joecar]

Does it make sense that the LS9 injector is at 7.11 grams/sec at 400 (with old axis) and 7.11 grams/sec at 468 with new axis???
...

The cell data remains the same; the axis changes, 400 kPa on the old axis is 468 kPa on then new axis.

Is 7.1 g/s incorrect for those injectors...?

[Redline Motorsports]

Joe here is the route file....as far as the 7.11 grams/sec.......your converstion spreadsheet shows it at 400 kpa on your original chart and that 7.11 is at 468 on the latest chart with the new break points..

[joecar]

Ok, on that file, the B4001 cell range goes upto 8 g/s so in this case B4001/B1210 DeltaMAP axis steps by 16 kPa, that is the correct stepping.

[joecar]

See attached spreadsheet, it shows the old B4001 table (stepping 16 kPa) next to the new B4001 table (stepping 20 kPa)...

the DeltaMAP axis was corrected, the table cell values remain the same;

i.e. the axis was incorrectly mapped for the given table, now the axis is corrected for the same given table.

[joecar]

Old Stepping: 7.11 g/s = 56.43 lb/hr at 400 kPa
New Stepping: 6.55 g/s = 51.98 lb/hr at 400 kPa (interpolating for 400 kPa)

[Redline Motorsports]

Old Stepping: 7.11 g/s = 56.43 lb/hr at 400 kPa
New Stepping: 6.55 g/s = 51.98 lb/hr at 400 kPa (interpolating for 400 kPa)

If thats the case then we have been off quite a bit with the old scaling! There injectors are noted as 52's!

Joe doesn't this mean the "old" scale is off???? If the injectors are 52 lb/hr, or 6.55 grams/sec, it should be referenced at 400 KPA.....how do you reconfigure that old scale to reflect the correct range?

[joecar]

Howard,

The old scale started at 128 kPa and stepped by 16 kPa, this is how Ross/GMPX defined it.

Then James/RWTD noted the error posted this thread;

the new scale starts at 128 kPa and steps by 20 kPa; this is how Ross edited it according to what James posted above.


If using a stock LS9 file (say in a ZR1), the even tho EFILive displayed the scale incorrectly (i.e. the old scale stepping), the PCM still used the correct scale stepping.

EFILive has been fixed to display the correct scale (i.e. the new scale stepping), the PCM still uses the correct scale stepping.


The problem with the old scale stepping arose when you change injectors and recalculate the IFR table, the cell data would align to the old scale and so the IFR would be wrong/off.

Same problem with the LS9->LS1 IFR interpolation.


So any injector calculations done with the old scale would have to be redone, and also any LS9->LS1 interpolations redone.