OS mode .... ?????

[Hamood]

hi guys ,

after the swap done from 5.3 to 6.0 lq9 engine, and the modification been done to engine :
-btr truck cam stage 2
-ls6 valve spring
-TBSS intake with 102 tb

and i take it to the tuner to load the tuning .
after that i check the engine running good and i feel more power
when i connect my hp tuner to see what kind of changes he done :
he load 1 BAr Maf OS and lot of changes .

my truck details :
2000 GMC Sierra 1500
P01 PCM

my mean questions is it required to load 1 BAr Maf OS for engine and cam swap ????
and also i attach the tuning file .

[Hamood]

Any update guys

[Hamood]

any body ??????

[Bill@HPTuners]

not required but RTT makes some aspects of tuning easier.

[5FDP]

The tune could be a lot better too. There is a lot of stuff they never did. Likely did the MAF OS because they refused to take the time to tune the VE table and get the whole airflow model corrected.

Also with the mods you did, I'm willing to guess that you are out of fuel injector too. 25lb/hr are barely large enough for a mild 6.0 and you have an upgraded camshaft and intake manifold.

[Hamood]

okay that i need to upgrade the fuel injector and revert back to stock os and tune the VE table and correct the whole airflow and change a lot of table to get it right