A/F ratio through boost range
A/F ratio through boost range I know the tile may be a bit confusing, but I'll try and explain. Let's say my LS engine wants an AF ratio of 12.5 at 100kpa and I'm wanting 11.0 at WOT at 250kpa, should I run my AF ratio at 11.0 at every boost level or should it have a curve from 12.5 at 100kpa eventually to 11.0 at 250kpa? In other words, should I have a different AF ratio for every boosted kpa value? Let me know you're experiences. Thanks again guys.
usually i blend it yes, makes transient and off boost responce better, turbo usually lights off faster, engine feels more lively etc etc
12.5 80-130kpa
then 12.0 to 160kpa
11.80 160-200
11.50afr 200-230
230+ 10.80afr
12.5 80-130kpa
then 12.0 to 160kpa
11.80 160-200
11.50afr 200-230
230+ 10.80afr
A lot depends on the fuel, compression and timing you run. I've run over 12 to 1 at 30 lbs of boost without any issues.
Last edited by LASTLS1; Jan 12, 2015 at 08:19 PM.
