2010 Silverado 1500 LC9 5.3l - Total Engine Rebuild

Hi - I had my truck tuned when I first completed the engine overhaul but, I feel like it's still not where it should be. What I mean by that is the acceleration, towing and overall performance of the truck seems lacking. I've removed my cats and the gearing of the truck still sucks but, I expect more from it for just drive-ability. Currently the truck's RPMs drop significantly when transitioning from P/N to drive and the idle is still a bit choppy in Park. Wondering/Hoping someone can take a look at my current tune (attached) and offer some suggestions/changes to make it better. I've also attached a recent log file but, I have no clue if it'll be helpful.

List of mods:
Bored to 3.903
42lb. Injectors
Flat Tops w/3.2cc relief
64cc combustion chamber
Cathedral ports
Intake Runner 215cc
Exhaust Runner 80cc
Intake Valve 2.04
Exhaust Valve 1.575
Cam 216*/220* @ .050
VVT Delete
DOD Delete
1 7/8" Long Tube Headers to 3" exhaust w/MagnaFlow 40 series
33" tires
7.5" lift

Thanks in advance.

Adding to the above:
Had to replace the fuel pump last night. Truck seems to misfire when holding around 1700 RPMs on the freeway.

Anyone have any suggestions or pointers as to what I need to change with my tune?

i think you need to zero out the spark>adv>vct table.dont match the high and low spark table .and add kr to the scan.

Thank you. I've added KR to my scanner.

Since my last post, I found a tuning file uploaded by RussK and updated the Idle speed to be a bit higher to account for the Cam. I'll scan my drive home and upload later to provide a current readout.

Current tune: Attachment 93288

Latest log file w/KR added.

Attachment 93296

Quote:

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Originally Posted by Ohio_15

Latest log file w/KR added.

Attachment 93296

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Need to log a lot more to know what and where to adjust.... Needs some fuel and maybe a tad less timing or the knock sensors dialed in for headers, I would recommend doing some more research and at least get logging the important parameters and reviewing them until you understand what to change

goodluck

Thanks for the feedback. Sorry for the delay. I had to put in a new fuel pump and replace a header gasket so, I didn't log anything until today. Adding the latest log file. Suggestions on what parameters to track would be awesome too.Attachment 93560