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Thanks! It looks like the car may be staying in the extended family so I'll probably work on the rear wheel skirts a little more and try them for a couple of tanks with the other mods. It'll be comparing local to all highway driving but I'm still interested to see what the numbers are.
Subjectively I'd say the biggest window for better fuel mileage with the mods I have now is in "draft coasting". On pretty much any highway downgrade I can coast for a looong time with only the slightest draft, like two cars ahead of me. No practical way to do an A-B-A comparison of this but I know the car well and typically draft/coast downhill on highways and the car is clearly picking up speed on more gentle grades and holding speed much longer with or without a draft... with a draft though it's kind of ridiculous. Pulse and Glide is also a winner with this setup.
I don't know if I can "fix" this or not and I doubt I'll try since I'm selling the car but when in motion the ECU doesn't want to let the engine idle below about 1300rpm so the fuel savings while coasting could be even better if I found a way to let it drop back to the "at rest" idle.
Oh, I did have some engine temp issues that I'll discuss when I post pics. Nothing major but some refinement to the lower grill block would probably solve this.
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