LS2 Ifr table max value input

[fasttrackperformace]

I am working on tuning a turboed c6. I am trying to enter the values for motron 60 lb injectors, and the table has a max input of 63.5. After I figure the difference the injectors were flowed at I get a beginning value of 69.28325412. Is there a software problem, or do I need to take fuel out of the maf table to get it to work properly? Thanks

[Bill@HPTuners]

its a gm limit problem...you can compensate through VE or maf or whatever works for you.

[Russ K]

This was is the way I would set you IFR table for your Motrons.

Russ Kemp

[fasttrackperformace]

I will work on being able to look at what you posted. Is there anyone who has a tune for these injectorson a c6 with all the necessary changes, I am not that familar with tunging just yet but would like to get something rolling.Thanks

[Backside180]

This was is the way I would set you IFR table for your Motrons.

Russ Kemp

Russ,

Can you please explain the theory with how you set that table? I notice you keep the IFR constant from 0-40 kPa manifold vacuum.

Thanks

[Russ K]

Russ,

Can you please explain the theory with how you set that table? I notice you keep the IFR constant from 0-40 kPa manifold vacuum.

Thanks

If you look at the stock IFR table, the 0-40 kpa manifold vacuum cells are at the same value. So I just shifted the IFR table up by the diff between the stock & the Motrons. This table was from a 2006 C5 6L.

Russ Kemp

[Backside180]

If you look at the stock IFR table, the 0-40 kpa manifold vacuum cells are at the same value. So I just shifted the IFR table up by the diff between the stock & the Motrons. This table was from a 2006 C5 6L.

Russ Kemp

Interesting. My C5 IFR table varies the whole way from 0-80 kPa manifold vacuum.

Any idea why they changed it for the C6s... or what changed to make the table shaped like that?

[EC_Tune]

I think Russ was meaning that an 06 C6 (any) has the flatline from 0-40 Kpa Vac. The 05 C6's IFR table looks "normal".

[redhardsupra]

i've been meaning to ask, does anyone know what is the reason for the wacky half flat, half sloped IFR table? they do have a normal FPR, right?

[EC_Tune]

Same in-tank returnless fuel system as the 2005's in the 2006's.
Does this mean GM knows something we don't? Or did they screw up?

Completely different ECM on the `06 though. TCM is located inside the A6 trans.