MAF calibration

[aljuhani392]

hi guys

panther platform
i have problem which the timing start drop after 5500 rpm
so in the tune table
rpm column( ....3200-4000-5250) < max value at the table 5250 rpm
timing 14-16-22

in the scanner im getting timing correct but after 5250 timing start to drop
i noticed MAF g/s and voltage not claiming are steady at 5300-6000rpm
which means car not getting any airflow more (full bolts on)
so timing start drop
the car runs at 13:0:1 afr when increasing maf table to Achieving 12:0:1 afr
start drop timing aggressive after 5250rpm 22* after that 5500 rpm 20*
now at 13:0:1 5500rpm 21*
so more airflow at maf calibration drops more timing)


-no knock and not related to the retard
-MAF 5v not Maxing out
-no Restriction to the intake, the car full bolts on
-cam in stock 4.6 2v power rpm range 4500-5500 rpm which
explains maf readings i thinks correct me if was wrong


Is there a solution to this problem and I would be thankful
There is another solution I am thinking of, but it takes time re scale rpm column to 6000

another thing i want firm shifts a little bit (trans trunc is off)


thanks alot

[VENTILATOR]

I awannna see your file and compare i neeed help too