Yikes, I know the picture may only be for "show off" purposes, but I hope that #5 plug wire will be rerouted to a safer place.
Assuming you have the correct AFR with the 10% ethanol you would actually make a little less hp with straight 91....Also as Jim stated 91 octane with 10% ethanol. It'd probably make a little more with straight 91.
Ethanol has less BTUs but you need more volume of it and the total adds up to more power.I had always been under the impression that all things equal it made less as ethanol has less BTUs?...
Ethanol has less BTUs but you need more volume of it and the total adds up to more power.
You could still have gone richer, and most likely picked up even more horses...:VB toast:...More drilling, smaller air bleeds. Now we're at 10:1 A/F, EGT's are 1,100 degrees, intake manifold has ice forming on the outside of it. We're out of dyno time but the horsepower meter says 845 HP.
I guess he was right. We didn't get another 120 HP, more like 165!