Ideal Air Fuel Ratio
06-11-2007, 10:13 PM
#1
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Ideal Air Fuel Ratio What A/F ration does the lsx like. I have a ls6 headed mild cam motor that I am getting tuned this weekend. I am curious to hear what I should shoot for as far as A/F. Thanks.
06-12-2007, 10:04 PM
#3
Moved from Advanced Tech.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
Custom LSX tuning in person or via email press here.
06-13-2007, 09:10 AM
#6
I like the 12.8 - 13.2 range for N/A motors. richest right at torque peak. Leaning out past that to peak HP. Then rich again past peak HP for safety.
Some people make real good power at 13.5, but the tune better stay spot on or you could easily put yourself in danger.
Some people make real good power at 13.5, but the tune better stay spot on or you could easily put yourself in danger.
(unless you go open loop and push it) Trending Topics
06-13-2007, 02:28 PM
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I run open loop at target the following:
15:1 at idle and cruise
12.6:1 at peak torque (in PE)
12.9:1 at peak hp (in PE)
As MAP loads up past 70kPa, I richen it up progressively while approaching 90kPa (i.e. it drops to 14.5:1, then 14:1, 13.5:1, and finally 13:1). That way, it gets more fuel in the event that PE doesn't kick on.
15:1 at idle and cruise
12.6:1 at peak torque (in PE)
12.9:1 at peak hp (in PE)
As MAP loads up past 70kPa, I richen it up progressively while approaching 90kPa (i.e. it drops to 14.5:1, then 14:1, 13.5:1, and finally 13:1). That way, it gets more fuel in the event that PE doesn't kick on.
