just wondering what’s a good # for s13 sr20det blacktop. thanks!
- All engines are the same
- Google next time
But I’m in a good mood today.
Gasoline can be ignited in a non-stratified charge type engine between limits of roughly 10 to 1 (rich) and 20 to 1 (lean) air/fuel ratios. Most gasolines will burn fastest at ratios in the 12.5 to 13.5 to 1 range. The stoichiometric or chemically correct ratio is around 14.7 to 1 which also results in the lowest average emissions. Best power is obtained with a rich mixture of around 12 to 13.5 to 1.
PS: Unless you have a wideband O2 sensor the only reading you’ll be able to get is: Close to 14.7/1 … richer … or leaner.
ideal is 11.5-1 12-1
If you are worried about leaning out and can’t tune it properly I guess … otherwise why dump so much fuel in there?
turbo motor. I’d go as far as saying 12.5:1 but not more than that.