Whats everyone thats after fuel mileage on the highway tuning for
around 55mph to 65mph is the normal area I cruise on the highway so I've been hitting 16.x:1 afr's without any issues. What you guys targetting on your highway cruise cells for fueling. I wonder what others maybe doing to their spark maps, so far I'm still on DIY's base map for ms2 on the 1.6l motor.

Also has anyone that does try to tune for fuel mileage also use a EGT to see what the temps are doing?

 

Well EGT is pretty straightforward. At stoich, it's hottest. The end.

 

16:1 in cruise is about as lean as it gets safely.
Might wanna post a spark map for those that don't know what the base map looks like.
IIRC mine was in the upper 30's/lower 40's in cruise. e85 though

 

here we go for the current map


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I haven't changed the curise area timing yet.