What's the optimal fuel air mixture ratio after a CAI, Catback And Tune?
JollyWrench Well-Known Member Joined Sep 15, 2015 Threads 38 Messages 195 Reaction score 18 Location UK Vehicle(s) 2016 GT Oct 24, 2015 Thread starter #1 What's the optimal fuel air mixture ratio after a CAI, Catback And Tune? Sponsored
Higgs Boson Detonation Denotation Joined Oct 11, 2015 Threads 9 Messages 1,053 Reaction score 408 Location Texas Hill Country Vehicle(s) 19 GT350R Oct 24, 2015 #2 .83 Lambda
OP OP JollyWrench Well-Known Member Joined Sep 15, 2015 Threads 38 Messages 195 Reaction score 18 Location UK Vehicle(s) 2016 GT Oct 24, 2015 Thread starter #3 Is that about 12.2:1?
Higgs Boson Detonation Denotation Joined Oct 11, 2015 Threads 9 Messages 1,053 Reaction score 408 Location Texas Hill Country Vehicle(s) 19 GT350R Oct 24, 2015 #4 JollyWrench said: Is that about 12.2:1? Click to expand... depends on the stoich of the fuel in the tank.... if it is E10, stoich is 14.1, which makes .83 equal 11.70, which sounds rich but it is what it is.... E0, old school pump gas is 14.7 which makes it 12.2 if you are seeing 12.2 on E10 that is lambda .865, which is 12.7 on E0, but is too lean for a Coyote motor. I run the LSx around .87, the LTx (new GM DI) around .88-.89, and the Coyote around .83....this is all for NA applications of course.
JollyWrench said: Is that about 12.2:1? Click to expand... depends on the stoich of the fuel in the tank.... if it is E10, stoich is 14.1, which makes .83 equal 11.70, which sounds rich but it is what it is.... E0, old school pump gas is 14.7 which makes it 12.2 if you are seeing 12.2 on E10 that is lambda .865, which is 12.7 on E0, but is too lean for a Coyote motor. I run the LSx around .87, the LTx (new GM DI) around .88-.89, and the Coyote around .83....this is all for NA applications of course.
OP OP JollyWrench Well-Known Member Joined Sep 15, 2015 Threads 38 Messages 195 Reaction score 18 Location UK Vehicle(s) 2016 GT Oct 24, 2015 Thread starter #5 Old school pump gas meaning, standard unleaded petrol?
Higgs Boson Detonation Denotation Joined Oct 11, 2015 Threads 9 Messages 1,053 Reaction score 408 Location Texas Hill Country Vehicle(s) 19 GT350R Oct 24, 2015 #6 JollyWrench said: Old school pump gas meaning, standard unleaded petrol? Click to expand... meaning no ethanol, regardless of octane. there are probably only a handful of gas stations in the US at this point that even offer E0.....check the pump, E10 everywhere.
JollyWrench said: Old school pump gas meaning, standard unleaded petrol? Click to expand... meaning no ethanol, regardless of octane. there are probably only a handful of gas stations in the US at this point that even offer E0.....check the pump, E10 everywhere.
OP OP JollyWrench Well-Known Member Joined Sep 15, 2015 Threads 38 Messages 195 Reaction score 18 Location UK Vehicle(s) 2016 GT Oct 24, 2015 Thread starter #7 Do all unleaded patrols have the same Stoich rating? I really appreciate you helping me out thank you! I did notice that last time I was in the states! I wish it was like that in the UK!
Do all unleaded patrols have the same Stoich rating? I really appreciate you helping me out thank you! I did notice that last time I was in the states! I wish it was like that in the UK!
Higgs Boson Detonation Denotation Joined Oct 11, 2015 Threads 9 Messages 1,053 Reaction score 408 Location Texas Hill Country Vehicle(s) 19 GT350R Oct 24, 2015 #8 JollyWrench said: Do all unleaded patrols have the same Stoich rating? I really appreciate you helping me out thank you! I did notice that last time I was in the states! I wish it was like that in the UK! Click to expand... no they don't all have the same stoich. technically, E85 is unleaded, MS103 is unleaded, and E0 is unleaded, etc Sponsored
JollyWrench said: Do all unleaded patrols have the same Stoich rating? I really appreciate you helping me out thank you! I did notice that last time I was in the states! I wish it was like that in the UK! Click to expand... no they don't all have the same stoich. technically, E85 is unleaded, MS103 is unleaded, and E0 is unleaded, etc Sponsored
