4/15/2024 0 Comments Tuning factory ls ecu![]() Even with a low to mid 12's AFR at full throttle I bet it's pushing 90-100% duty cycle at high rpm.Okay I will look into the wideband O2. You added a lot of airflow with the large camshaft and more compression. The stock 25lb/hr injectors aren't going to be enough for an engine like this in my opinion. The massive spark retard at cold engine temps could go away and the intake temp spark reduction can start later instead of that 80 degrees. A few of the spark tables can be altered. It's too rich for this engine because all the tables are still stock. Whatever you do, don't disable power enrichment. The fuel trim tuning does you no good when you have to start tuning full throttle. If you don't have a wideband oxygen sensor for tuning, get one asap. The log is missing o2 sensor data, TPS and cylinder airmass too. This is from this evening on my ride home from work the early Revs was sitting in the parking lot wating to leave work and trying to fill in the STFT. stftmafoffpeon.hpl SDtestMAFOff1112021.hpt. Its appreciated for the assistance and your time looking at my stuff. I have logged a bunch of drives and the corresponding tunes with the runs if further are needed. If you get down on it the truck feels laggy. I have the truck starting and running okay, but feel like there is something I am missing something. I have added electric cooling fans and shorty headers. * Camshaft bearings: Installed and clocked to OEM position The truck is a SLE z71 4l60E I dropped in a Summit racing SUM-150153 its a long block 5.3l. I guess down to the brass tacks of things. I find it difficult to find a few of the items to change like the disable PE in which I believe I figured out tonight. Also I have been using and reading C'PIGS HP tuner guide as my reference material. I feel like with the SD tune that I am working on to dial this truck in is its loading up when I reach/sit at a stop sign and until i reach the higher RPM's it doesn't clear out. I would like this tune looked over and some suggestion and guidance. ![]() Ok Gang I am wet behind the ears to tuning.
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