a/f ratio

[thrasher324]

whats the right a/f ratio for sr20det? i mean like what would the number show as on the wideband gauge

[bigdreezy]

11.5 @wot

someone correct me if im wrong?

[steve shadows]

whats the right a/f ratio for sr20det? i mean like what would the number show as on the wideband gauge

You should be around 14.6:1 between 1-5000 rpms OFF BOOST, and about 14.0:1 if you are using a 255 ltr per hour pump and higher flow in line fuel filter. Seomtimes it will run a bit richer either way with the bigger pump.

On boost under full load iwth an updated pump you should be hitting between 12.0:1 and 12.5:1 at the leanest. Some cars will run on the richer side but no richer than 11.0:1