Need help tunning turbo 6.0Lq4

[Dmace02LQ4]

Made some updates to my last tune and atleast got the truck to idol and be able to move . I still need a few pointers on where to go from here I have a 3 bar map, siemens deka 60 injectors and a 78/75mm turbo. The problem I am currently having is the truck goes very lean when I go to test drive it I will post the tune can someone please take a look and see whats going on I am new to the hp tuners . I have began playing with my ve table, pe table and spark table.....Thanks In advancedmy 3bar tune change idel adjustment (starting to figure it out) VE table change.hpt

[ChaseChris8]

Have you set the MAF to fail? You need to set the MAF fail hz to 0 and in diagnostics change the MAF settings to MIL on first but then uncheck the boxes so they don't throw a CEL.

[ChaseChris8]

I'll take a look at the tune later when I get home and see if I can see anything funky. I am tuning the exact same setup right now.

[Lakegoat]

Yep, you need to go back to the DTC's and change P0101,102,103 to First error instead of no error.

[5FDP]

Yup, and you'll likely need to scale back your VE some. It will likely be pretty rich with the way it is now, then don't forget to remove all those factory PE delays and setup your boost enrichment settings.

[Dmace02LQ4]

did some updates to the tune can someone please look it over and see whats going wrong with it still...thank you

[5FDP]

Don't forget to change your injector size.

Why does your timing table look like it does, it's not going to run right at all with the max timing you allow for is 10 degree's. Please put the factory timing table back in this thing. GM knew what they were doing for part throttle timing numbers.

[Ben C]

this is all over the place.
your PE is richer than BE, that doesn't make much sense.
With the timing tablelike it is, and with cat lightoff and ect modifiers your car would run so bad, with ignition occuring ATDC.

there is a lot of work to be done here. SOmetimes it is best to just take it to a tuner.

[Dmace02LQ4]

my 3bar tune change idel adjustment (injector change) VE .hpt made some changes let me know if this seems better I didn't have time to drive it lastnight I know I still need to adjust the VE table ...please no negative commentary every body has to learn and start somwhere

[dodiibob]

my 3bar tune change idel adjustment (injector change) VE .hpt made some changes let me know if this seems better I didn't have time to drive it lastnight I know I still need to adjust the VE table ...please no negative commentary every body has to learn and start somwhere

In spark the high octane and low octane has to be same

[5FDP]

No it does not. The low octane table always needs to be lower than the high octane, if the motor knocks it has nothing to revert back on to save the engine.

[dodiibob]

No it does not. The low octane table always needs to be lower than the high octane, if the motor knocks it has nothing to revert back on to save the engine.

you are right if it is maf but i think this program is mafles SD

[cobaltssoverbooster]

sd vs maf has nothing to do with what table is selected. table selection always starts with high octane after ecu reset. if it detonates above a threshold limit the ecu diverts to low octane thinking the fuel is inferior. it will not go back to high octane until the ecu is reset or the fuel tank is filled up.
dyno tuning i make them the same so it doesn't matter and i get a forced value but once it leaves the dyno the low octane goes back to a reduced table for safety reasons. this is common practice with most shops.


sd and maf are airflow density modes. you can separate the ecu into two sections: airflow mapping and ignition mapping.
airflow mapping includes injector data, pressure sensors, temperature sensors, maf data, ve data, and throttle specs.
ignition is strictly advance and modifiers for reduction based off of temp swings, afr swings, and registered events through the knock sensors.

yes both halves use similar sensors but they do not care what the other one does which validates my previous statement about airflow modes not making a difference in reference to advance table selection.

[Area47]

in sd mode, it reverts to low octane tables for timing.

[cobaltssoverbooster]

i still get an active high table. P59 controller
is it possible by leaving some things active i could have triggered it to stay active?