E85 afr

Would 11.6-11.8 at wot in 6000+ rpms be considered safe?

I would say that depends a little bit on how hard you are leaning on the blower and IAT.

For example, this is my 3V at 19psi. If I turned it up to 30psi at 18,000 blower RPM, tuner would probably bring the afr down.

Weather Man said:

I would say that depends a little bit on how hard you are leaning on the blower and IAT.

For example, this is my 3V at 19psi. If I turned it up to 30psi at 18,000 blower RPM, tuner would probably bring the afr down.

View attachment 1671398

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Could you elaborate on “leaning on the blower”? My IAT was upper 80s if I remember right. Funny thing my car was tuned where your car is on that dyno sheet. Is that shop in WI?

Are you testing your E85 every fill up? If you're tuned for E85 exactly and you run E90 the car will run a little leaner, if you run E80 you will run a little richer.

2011 gtcs said:

Are you testing your E85 every fill up? If you're tuned for E85 exactly and you run E90 the car will run a little leaner, if you run E80 you will run a little richer.

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I did it was at 85 on the money.

Blackwell808 said:

Could you elaborate on “leaning on the blower”? My IAT was upper 80s if I remember right. Funny thing my car was tuned where your car is on that dyno sheet. Is that shop in WI?

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Rogers, MN

Blackwell808 said:

Could you elaborate on “leaning on the blower”? My IAT was upper 80s if I remember right. Funny thing my car was tuned where your car is on that dyno sheet. Is that shop in WI?

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How close or over max rated blower RPM. IAT2 blower discharge air temp.

Call Danny, the tuner/owner, at DB Performance, straight shooter and he will tell you what is safe and what is not.

I would think that would be ok. Depends on boost, and timing though. I run 25lbs and my af is a tad richer at 11.2-11.6.

Yeah that's fine.

E-85 can tolerate rich quite a bit before you loose any power and some engines even pick up power when running richer.