timimg or leaner a/f to make power.

[boosted86]

just curious to see what a/f's people are running to get the most out of there setups. do you guys opt for a richer a/f and higher timing advance of a leaner a/f and lower timing advance... looking for some solid feedback that has been tried and proven, not "i thinks"....
thanks in advance.

 

[kris_stewart10]

i was running 14.7:1

that was on my 1G 6 bolt

 

[force_feed]

is 14.7:1 during idle?

 

[nlzn]

I run 12.9:1 at WOT on 20-22lbs depending on the situation on a 16g. Timing is not advanced, it's sitting @ 5btdc base with no map adjustments.

I'm pretty conservative on tuning, I know I could lean that out a tad.

 

[silvreclips]

Increasing the boost will give you the most power, followed by more timing and then AF ratio. Running more timing will give you more power than leaning out your AF. All motors are different and this may not be the case for your application but this is what most people have found to work.

 

[boosted86]

I run 12.9:1 at WOT on 20-22lbs depending on the situation on a 16g. Timing is not advanced, it's sitting @ 5btdc base with no map adjustments.

I'm pretty conservative on tuning, I know I could lean that out a tad.

wow! 1g's already have a pretty aggressive timing curve,and running that lean of an a/f (anything over 12.0:1 is pushing it to me) whats your secret......meth?

 

[1992awdlaser]

Timing will make more power than a leaner air/fuel ratio most of the time. What I do is get my air/fuel ratio to 10.8:1-11.0:1. Then I add timing and watch my horsepower estimate in dsmlink. You have to drive in the same spot of road for the dsmlink hp estimate increase to be accurate. When I stop gaining about 8hp per degree of timing I will start to lean it out if I can.

The best way to do this is on a dyno though and pay attention to the dyno numbers to know when to stop increasing timing.

 

[assault187]

I ran 11.5-1, 30 psi, +7* timing advance up top, with Meth injection...Runs well, powerfull, no Knock

I always ran a bit rich to be on the safe side but the power seemed stronger when leaving the boost levels and advancing the timing. SO I'll vote timing over lean AFR's

There are alot of varibles that will differ from setup to setup I.E. manifold, boost, IC setup, Fuel etc.

 

[boosted86]

Timing will make more power than a leaner air/fuel ratio most of the time. What I do is get my air/fuel ratio to 10.8:1-11.0:1. Then I add timing and watch my horsepower estimate in dsmlink. You have to drive in the same spot of road for the dsmlink hp estimate increase to be accurate. When I stop gaining about 8hp per degree of timing I will start to lean it out if I can.

nice explanation.