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jtblckmaro · 05-18-2020, 12:15 AM

Hey all,
Learning to tune my'17 ZL1.
Been switching back and forth trying to tune MAF and speed density but having issues getting consistent numbers when logging. I set everything up as shown in videos from goatrope garage/tuning101.com, slowly and step by step so I don't miss anything but noticed during MAF logging I get lean spikes when shifting, so I wonder if clutch fuel cutoff is still kicking in. The drive feels much better on my speed density tune but with what I'm seeing during my MAF runs I want to make sure I don't have the same issue bleeding over.
Also, I'm unable to disable closed loop by changing o2 readiness voltage or closed loop delay time do any tips there would be appreciated. Right now I disable closed loop through the scanner but it turns itself back on on occasion.
I guess ultimately my question is what do you guys tune in preparation for MAF and speed density logging and tuning?
Also looking for any and all resources to learn from.
Appreciate any guidance!

05-18-2020, 12:15 AM	#1
jtblckmaro JtblckZ Drives: Black 2017 ZL1 Join Date: Feb 2012 Location: Texas Posts: 40 View My Garage	HP Tuners Prep for MAF and SD Hey all, Learning to tune my'17 ZL1. Been switching back and forth trying to tune MAF and speed density but having issues getting consistent numbers when logging. I set everything up as shown in videos from goatrope garage/tuning101.com, slowly and step by step so I don't miss anything but noticed during MAF logging I get lean spikes when shifting, so I wonder if clutch fuel cutoff is still kicking in. The drive feels much better on my speed density tune but with what I'm seeing during my MAF runs I want to make sure I don't have the same issue bleeding over. Also, I'm unable to disable closed loop by changing o2 readiness voltage or closed loop delay time do any tips there would be appreciated. Right now I disable closed loop through the scanner but it turns itself back on on occasion. I guess ultimately my question is what do you guys tune in preparation for MAF and speed density logging and tuning? Also looking for any and all resources to learn from. Appreciate any guidance!