what afr are you running??? pole
On N/A vehicles I shoot for 12.6-12.8:1 at torque peak and 12.8-13.1:1 at hp peak and redline. Soem like to be richer then others though. Some liek to be leaner too. This is just a good starting point if you are not on the dyno or at the track to see were you are making more power.
can anyone send me their maf calibration table if you are running hp tuners.... i am trying to run 13.1 - 1 also if you could send your ve tables..... i am not wanting to toss them at my car i just wanting them to compare to see if i am in line with the route i am going....hahha i need help lol
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12.0 below peak tq
12.2 for peak tq
12.8 for peak hp
12.6 above peak hp
This AFR along with a slight increase to timing (1~3 degrees advance) netted me ~0.2 seconds and ~2mph over the factory tune.
12.2 for peak tq
12.8 for peak hp
12.6 above peak hp
This AFR along with a slight increase to timing (1~3 degrees advance) netted me ~0.2 seconds and ~2mph over the factory tune.
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I run ~12.5 up to peak torque, where it goes down to about 12.44 (@ 4800 RPMs), and then I lean it out to ~13.0 for the rest of the RPM range. My car definitely likes being richer before peak torque...that's for sure. No track times to back it up though...
Even with leaning it out a bit up top, I'm still seeing 83% injector duty cycle with only full exhaust, a little intake, but still stock internals.
Even with leaning it out a bit up top, I'm still seeing 83% injector duty cycle with only full exhaust, a little intake, but still stock internals.
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From: Gateway International Raceway
Originally Posted by MeentSS02
Even with leaning it out a bit up top, I'm still seeing 83% injector duty cycle with only full exhaust, a little intake, but still stock internals.
I know some guys running cam only that are over 100% duty cycle...I think you can fairly safely run up to almost 100% without too many problems, but it is definitely not recommended, as it just may not be consistent enough.
very nice guys...i think i will try 13.1 and make a second tune for 12.5 i think my injectors maxed out this weekend......will need to upgrade.....any recommendations...?
I tuned a cam only 2500hd the other day with stock injectors...over 110% duty cycle!!!!Yikes Would lean out to 13.4:1 up top, time for injectors. It still has manifolds and stock intake.
i run 12.9-13.2 and make 500 hp with a small cam lol jk but tahts the afr i run and i get my best numbers with it in logging and it feels great. but no hard numbers to back it up on the dyno