help with tuning AC with big cam

[01blkss]

ok guys i have my car idling good...i keep it at about 1000 because i dont want any more lope than it already has...

Either way when i turn my AC on the idle drops to about 500 rpm and then the ac will not work...only works if i then manually hold the idle up with the accelerator pedal. any input on how to fix this would be awesome..

I have an OLSD tune mafless.

Thanks
Louie

[ringram]

have a look at the b4354 table and your desired idle speeds with ac b4603. If your idle speeds are ok, try some more air in b4354 and see how that goes.

[bink]

ok guys i have my car idling good...i keep it at about 1000 because i dont want any more lope than it already has...

Either way when i turn my AC on the idle drops to about 500 rpm and then the ac will not work...only works if i then manually hold the idle up with the accelerator pedal. any input on how to fix this would be awesome..

I have an OLSD tune mafless.

Thanks
Louie

Here's what helped mine a lot. Increasing these values ramps airflow faster -> these values are from the 2004 GTO tune:

B4354:

LABELS A/C Airflow Ramp In (Grams/Second)
Nm Value
0 5.000000
5 5.000000
11 5.000000
16 5.000000
22 5.000000
27 5.000000
33 5.000000
38 5.000000
43 5.000000
49 5.000000
54 5.000000
60 5.000000
65 5.000000
70 5.000000

B4354:

LABELS A/C Airflow Ramp Out (Grams/Second)
Nm Value
0 0.040039
5 0.040039
11 0.040039
16 0.040039
22 0.040039
27 0.040039
33 0.040039
38 0.049805
43 0.049805
49 0.049805
54 0.049805
60 0.049805
65 0.049805
70 0.049805

G0108 AC Torque Loss:

Scaled entire table by 133% (*1.33)then backed it down to bring Long and Short Term Idle Air Trims into same range as when AC/Off. Wait a couple minutes after turn/On in order for the LT/ST Idle Airflow values to settle.

Hope this helps some.