Make sure your Target AFRs match your Fuel Type - Holley Tuning 

Thanks pablo!

If you’re tuning with the Holley, selected your fuel type as gasoline, and have tuned your base table to achieve your targets, you should actually still be able to set your target AFR as though you are on pump gas. Every combo is different, but it is likely you are running too fat right now, and should raise your targets back up to 12.4-12.8.

I can not speak to LS tuning. I do not have any experience with those engines, and do not know what kinds of targets they like.

@@LeechMotorsports ok thanks but would you still fill in your fuel map with these gas figures on e60 thats what i really ment to say.

The short answer is yes. If you are going to tell the Holley your fuel type is gasoline in the dropdown, then you need to target the kinds of AFRs that you would if you had pure gasoline in the car (even though you’ll be on e60).

@@LeechMotorsports thank you very much for your time .

On these older cars, I think of e85 as being the typical limit between a true street driven car, and a track car. I realize there are flex fuel options out there for tuning in the Holley. But I never recommend trying to make a flex fuel tune have the max possible performance available in a pure e85 tune. Just too risky. And with pump e85 being so inconsistent, it’s the kind of thing where I wouldn’t do e85 unless I was prepared to plug-in a laptop pretty much every time I drive. I do this on my coupe. But it rarely gets driven.

And e85 is so popular for newer cars due to the common practice of having much higher compression than most of the sbf stuff out there. And fuel systems/factory efi system so commonly ready for e85 off the showroom floor.

@@LeechMotorsports thank you for your time and advice man 👍🏻. I a,ways have the laptop and try to log each drive. I think I am near the limits of 93 and meth injection isn’t an option I want. Was hoping to make some progress to get this car running cooler and go from 10lbs boost to 12-13 possibly. I think my compression is high 8s or low 9s.

At that compression, you should be able to run upwards of 13-14 psi on pump gas. However, you could definitely make more power on e85 and safely turn it up even more if you feel so inclined. I wouldn’t count on it bringing the engine temps down though. Do you have enough injector, line size, and pump to support that change?

@@LeechMotorsports currently have deka 80s, aeromotive a1000, return, I’m drawing a blank right now on line size but I believe it’s adequate. Thank you for helping me

This typically comes down to personal preference. And I couldn’t agree more. Many people learn tuning using one or the other and really prefer to continue working with what they are familiar with. They really would help the community with lambda based tuning.

If you change the fuel type in the software to E85, then you need to target AFRs that make sense for e85 like in the 9s.

@@LeechMotorsports appreciate your video! I said Lambda values (watching too many videos) but you knew what I meant (E85 AFR values). 👍 on 93 gasoline I target 11.5 AFR in boost. So on E85 I have to update my target table to 7.6 AFR? Will my wideband gauge be reading 7.6 AFR? That will look weird to me coming from the import side, tuning on Hondata and Cobb where I always target the same AFR for 93 and E85 and have had no issues. Seems like that might be a big difference between the programs. I have so much more to learn about tuning on Holley. I'm tuning/learning on a Holley Sniper.

Not in the Holley software. That is a HUGE gripe for a lot of people out there. But I’m so used to tuning with stock computer stuff that I prefer tuning to AFR anyways.

That is correct.

And I prefer to tune with the Holley exactly that way as my brain is more wired to pump gas target numbers.

@@LeechMotorsports thanks for the reply! I’m redoing my fuel lines now once I get the car going again If your interested I could send you a run down of the motor and my tune for a review video it’s a pretty stout vortech 306

Please do.

Yeah as long as you selected your fuel type as ethanol that should be close.

@@LeechMotorsports no I don't have the same setup. I'm running blow thru so I'm just going off the gauge. My gauge is setup for regular gas at 14.7. I'm thinking it's real close tho as 14.7 gas = 1.00 lambda= 9.7 e85.

I really appreciate you! If you do feel so inclined, you can donate at the link below. www.paypal.com/paypalme/theleech405

Just too many cars being tuned right now. Cant find the time. I promise I’ll be getting back to it soon though. Got a stack of topics I want to do.