Ideal EQ ratio for open loop base with e85?
Ideal EQ ratio for open loop base with e85? I'm working on getting my car to have a better cold start and wanted to ask you guys what have you found to be a ideal EQ ratio for open loop with e85?
I've done alot of searching but haven't found much on this question strictly talking open loop base and e85.
This is on a built 10:5.1 CR 346, 232/240 115lsa blower cam, Procharged
thanks for any help.
I've done alot of searching but haven't found much on this question strictly talking open loop base and e85.
This is on a built 10:5.1 CR 346, 232/240 115lsa blower cam, Procharged
thanks for any help.
Last edited by 30th t/a; Aug 11, 2025 at 11:50 AM.
There was a pretty good discussion about that on the HPT forums a year or two ago when someone was having cold start cranking problems on a flex tune. I don't remember the specifics, but cranking fuel with E85 had to be what I thought sounded insanely rich to get the engine to start when really cold. Once running, stoichiometric is fine, although cams with a bit of overlap tend to not read properly on the o2 sensors at idle.
There was a pretty good discussion about that on the HPT forums a year or two ago when someone was having cold start cranking problems on a flex tune. I don't remember the specifics, but cranking fuel with E85 had to be what I thought sounded insanely rich to get the engine to start when really cold. Once running, stoichiometric is fine, although cams with a bit of overlap tend to not read properly on the o2 sensors at idle.
