2002 silverado 5.3 ss2 70 lb injectors 78/75 billet 1.25 a/r
2002 silverado 5.3 ss2 70 lb injectors 78/75 billet 1.25 a/r
Last edited by X_Racing1; 12-25-2022 at 10:56 PM.
if i put the NA tune back in it starts right up
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Applying the custom OS fills that with nonsense data, you need to give it real data for it to run.
Also need to verify MAP sensor linear/offset match the actual sensor being used, those get changed to defaults too.
ok ill look at the table but where do i find the info for the map im using a duramax one from the same year truck
You need either real data for those injectors, or if that's not available, different injectors that come with real data.
I looked for your MAP sensor but couldn't find anything.
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Maybe if you had a part number? But be aware, if it's not one that's commonly used in swaps the linear/offset may not be published anywhere.
Mystery parts with no data are not a good fit for the stock PCM. Might be better off with a Holley where you pick parts from a drop-down menu, they are built for stuff like this. The stock PCM is not.
Here's your tune with the Duramax MAP sensor data and a typical turbo VE table for your application.
It should get you running. However, you will need to find the proper injector data in order to get it dialed in 100%.
lucy 2 bar 7578 tbss 92 tb changed fuel table KW MOD.hpt
I wouldn't use a duramax map sensor but that's just me.
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.
I agree. There are way better options. If you're staying below 15 psi, the ol Cobalt 2 bar sensor is hard to beat.Originally Posted by 5FDP
Why not the Duramax sensor? Loss of resolution? I'm using a later model Duramax 4 bar map sensor (GM part #12612110) on my LNF Cobalt Ecotec (actually an ATK LHU/LNF replacement long block w/ intake and sensor) in my kit car at up to 24psi. This is also the sensor used in some of the Buick and Cadillac models.
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