Tuning help

[Jayyk31]

The CALC.EOP pid uses the pid GM.EOPS which reports Corvette LS1 oil pressure voltage input to the PCM...

you would need to enable Engine Oil Pressure in G1207, and you would need to pin the PCM connector (I would have to look at a 2002 Corvette wire diagram).

When I enable the oil pressure in G1207 which platform do I enable it under? When I did the system segment swap the platform options switched from gm 810 to f body?

[joecar]

F-body.

[Ricoch3T]

What calculation did you use to calculate the VE difference for cubic inches?
I keep taking shots in the dark from a stock 5.7 table for my 396ci motor

+1
this is a good thing to do, let's see how this goes.

I fixed the IFR. I recalculated and set the column label to lbs/hr.

I also scaled the VE & cranking VE by 25.48% as a start. Thats the difference i calculated from the cylinder air from a 5.3 to a 408ci.

[joecar]

To convert ci to L divide by 61...

with units, it's actually 61 ci/L...

so (396 ci) / (61 ci/L) = 6.49 L


so then the fraction increase = 6.49 / 5.7 = 1.14 (rounding to 2 places)... so about 14% increase in displacement.

[Jayyk31]

Joecar explained that perfectly!!! For my combo I figured the % difference in displacement from 325ci to 408ci. Then I multiplied the table by the percent difference. I still have to fine tune everything anyway but the engine fired and ran on the '01 Silverado tune with all the fueling modifications but I couldn't get her to fire with the '01 f body tune for some reason. And of course I need to use the f body tune because it's a factory 6 speed tune. Lol!

[Ricoch3T]

Appreciate it... Been trying to force myself to learn how to tune.. I keep wanting to give up and head to the dyno though.

Thanks again sorry to hijack your thread.

To convert ci to L divide by 61...

with units, it's actually 61 ci/L...

so (396 ci) / (61 ci/L) = 6.49 L


so then the fraction increase = 6.49 / 5.7 = 1.14 (rounding to 2 places)... so about 14% increase in displacement.

[joecar]

No worries.

The basics are: airmass, fuel (which is proportional to airmass), injector data, spark advance, idle.

The GM PCM's are a bit more difficult because they have built-in sanity checks and saves (e.g. fueling is determined by richest of the currently active tables, and negative trims are never applied to PE/WOT).