I am wondering is applying the 2 bar sd enhancement is going to put the truck in speed density mode automatically or will the values in the tables be wrong and in need of adjustment. vehicle is 2004 gmc sierra 5.3 p59 computer only mods are long tube headers custom y pipe and muffler
The 2 BAR OS is there if you require and operating system for boost, otherwise it is not needed. (You can run Speed density on the factory OS with just a few simple changes)
It does not put it into speed density only, there are still adjustments within the calibration that have to be done for full speed density. Someone could run the MAF sensor on the 2 bar OS if they wanted too but that kind of defeats the purpose of the OS upgrade. Some table are also blank when upgraded, have been set to a MAX value or had automatic changes done. I believe sometimes the VE table will be either un-populated or be set to a max value of like 200-300. The MAP sensors can get set to either a 2 bar map or 3 map even though the sensor you are running does not have those values.
Last edited by 5FDP; 04-08-2018 at 07:23 PM.
2016 Silverado CCSB 5.3/6L80e, not as slow but still heavy.
If you don't post your tune and logs when you have questions you aren't helping yourself.
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