My wife have a Hyundai Sonata 1992 with a 4g63(mitsubishi 2.0l) and 3 speed automatic FWD 3 speed + overdrive + lock-up.
My Galant VR4 also have a 4G63 but Turbo and 3 speed automatic AWD + overdrive witout lock-up.
Both car have similar FE but The Galant made a bit better with about 5MPG more. But It is Turbo without lockup and it's AWD. So if the galant was FWD with a lock-up, it will do better FE. Both car weight almost the same.
But if I dont run at low trottle FE will rise up, full trottle @ 25 psi of boost, i'm about 375HP at the wheel! Not good for FE
In 4g63, the compression ration of turbo and non-turbo engine is different.
92 Mitsubishi Galant VR-4 4G63 A/T AWDTturbo email@example.com mph 0-60MPH:3.6s 50-75MPH:2.4s ,2x 92 Honda Civic VX (4.7l/100km) Gone in 12 secondsGO FAST WITH CLASS, DON'T USE NOS!
talk about the best of both worlds. gas mileage without boost and enough tail to get out of the way with boost.
That's the rub, how much fun vs. how much FE?
Certainly a turbocharged engine is the right way to push both ends of the envelope. But there's still a limit to how much power you can get and still keep good FE. I'd like to see what a 3 cylinder 1 liter engine could do with direct injection and compound turbocharging. Maybe add an electric motor to make it a hybrid, and setup the engine so it can run as a generator when needed.
What would you guess? Maybe 75mpg and 250HP?
DRW, explain me how you get 46 to 53 mpg with your big Laser?
You almost make the FE of my VX with the set-up of my Galant that make 19 mpg...
Haha, it's magic!
It's all in my gaslog. Essentially I have a long boring commute, which gives me plenty of time to think of new ways to squeeze more mpg out of the car. The car is fwd with a taller 5th gear and an eprom ecu with extensive mods. I've been on the dsm-ecu list for several years, and they released a full commented disassembly which makes it easier to mod almost everything in the ecu. Not to rain on anyone's parade, but even the famous AEM EMS would be a step backwards compared to the level of control I have with this ecu.
I also drive really slow.