I have a couple of questions about this subject.
Should the AFR be in the 14.7 range when starting from a cold start?
Should the AFR be in the 14.7 range while in Open loop with the engine warm?
From what I can find, it should always be in the 14.7 range. If so, what should be adjusted to get it there. Mine is running in the 12.8 to 13.2 range till the system goens into closed loop.
I made changes to the Idle air in P/G and it does not seem to make any difference.
Thanks
1999 Corvette
Stroked LS2 402ci, Trickflo 225 Heads, Wiseco blower pistons, Callies H-Beam Rods TPI Headers, Random Cats, Borla exhaust, Kenny Bell supercharger with 10psi boost
Level 10 L460E tranmission, 315 rear gears, Bear brakes and Calipers
OLFA, in most cases, for cold start adjustment. Yes, it should be around 14.7, mine is just slightly richer on startup, but not much.
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
I have attached the OLFA table for Open loop. It looks like the numbers are in the 1.00 range for the MAPs and temps during the normal startup
1999 Corvette
Stroked LS2 402ci, Trickflo 225 Heads, Wiseco blower pistons, Callies H-Beam Rods TPI Headers, Random Cats, Borla exhaust, Kenny Bell supercharger with 10psi boost
Level 10 L460E tranmission, 315 rear gears, Bear brakes and Calipers
Does it pull values from the OLFA table only at idle? What about a 2bar SD tune?
2000 ECSB Sierra, with a lot of tuning to do.
It pulls values from here when in OL, except when in PE it takes the richer of the two.
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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