What is an acceptable difference between banks one and two for fuel trims? Bank 1 is at +1.6% and bank 2 is sitting at 0. Which makes for a good overall trim in the histo, but thats an aveage, shoudlnt the banks be closer to each other?
Chris
What is an acceptable difference between banks one and two for fuel trims? Bank 1 is at +1.6% and bank 2 is sitting at 0. Which makes for a good overall trim in the histo, but thats an aveage, shoudlnt the banks be closer to each other?
Chris
2009 Silverado Crew Cab 5.3L, stock.
mine are off a bit more than thatmy bank one is normally about 3-5% leaner
Sulski Performance Tuning
2000 WS6 M6 - LS6 (long block, refreshed top end), 10.8:1 CR, 90 mm ported FAST, Exo-Skel, 227/232 cam, QTP HVMC, EWP, GMMG, 9" w/4.11s
2018 Sierra SLT 5.3L A8 - Airaid intake tube, GM Borla catback, L86 Intake/Ported TB
wow! so is that not a bad thing for dialing the in the fuel? I'm not so worried about mine anymore! I thought I had an exhaust leak that turned out to be my exhaust hanger rattleing, so I ruled that out.
Chris
2009 Silverado Crew Cab 5.3L, stock.
exhaust leak, mismatched injectors, so many variables. i think mine are just in the o2s maybe. thats why i am going open loop and tuning with a WB. and i will be using bank one which will be slightly leaner anyway and then ill be safe any way i do it. my injectors are also flow matched
Sulski Performance Tuning
2000 WS6 M6 - LS6 (long block, refreshed top end), 10.8:1 CR, 90 mm ported FAST, Exo-Skel, 227/232 cam, QTP HVMC, EWP, GMMG, 9" w/4.11s
2018 Sierra SLT 5.3L A8 - Airaid intake tube, GM Borla catback, L86 Intake/Ported TB
So you think I will be ok when I start tuning in Open Loop with my wideband?
Chris
2009 Silverado Crew Cab 5.3L, stock.
yeah dont even worry about what the narrowbands say, the wb will tell you what is really gonig on
Sulski Performance Tuning
2000 WS6 M6 - LS6 (long block, refreshed top end), 10.8:1 CR, 90 mm ported FAST, Exo-Skel, 227/232 cam, QTP HVMC, EWP, GMMG, 9" w/4.11s
2018 Sierra SLT 5.3L A8 - Airaid intake tube, GM Borla catback, L86 Intake/Ported TB
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