Thought I would join this thread.
On my Talon, I also am trying to get great fuel mileage at 65 to 70 mph. I have hit a road block due to my stock gearing and aero (28.8 fps piston @ 70mph and a .29 Cd). I'll be lucky to get 40 mpg at 65 mph. My best so far is 38 mpg @ 65 mph and that was throwing everything at it including the kitchen sink.
My mods.
Engine:
2.0L
modified 1g turbo pistons, spray-guided crown.
modified head, spray-guided high heat direct port.
custom camshafts.
intake manifold, high heat direct port w/adjustable port angle injection.
Turbo System:
High-pressure Modified Blow-Down Turbine 13g internal gate dump to atm.
Low- pressure stock configuration FP Red BB, mid mount.
DNP Turbo exhaust manifold.
44mm Tial Bi-Pass waste gate.
FMIC 3" core.
LP Turbo pre-intercooler.
Tilton 40-527 external oil pump.
Jegs 12V Vacuum pump.
ECU:
ECM Link Engine Management system.
EGR:
HOT/COLD Electronic controlled cold EGR system.
Transmission:
Transtar/IPT 5 disk front clutch kit in stock basket, Transtar/IPT end clutches, double up stock flexplate, John Deere HyGard fluid, Foreign Muscle DSM (Transmission Control Unit), EPROM Upgrade full line pressure with pre-set rpm shift points.
2g lock-up converter.
Right now I'm working on getting the largest tire that will fit in my wheel wells. So far I have fitted a 1.5" larger tire then stock. The only way I will get close to my new goal 40mpg @ 65 mph is to reduce rpm. Piston speed is a killer when comes to fuel mileage.
Anyway I like that you are trying to have the best of both worlds (racing/fuel mileage) and hope for the best for you. Good Luck!!!
My Talon build thread.
http://ecomodder.com/forum/showthrea...awd-28776.html