I've just recently found a 1990 Geo Metro Lsi shell for $250, whereas I'm getting ready to build the metro of my dreams. Now just like everyone else, I'm hoping to achieve 50+plus mpg; but without utilizing any areo-mods (i.e. no offense to anyone who's done this).
Instead, I'm focusing upon engines modification that will effectively help me to achieve the gas mileage of an XFI, while choosing other modifications that influence the effects of rolling resistance. Now before anyone mentions it, I'm aware that there are numerous threads that deal with this topic, yet the information is a bit scattered throughout different threads.
What I'm hoping to get is feedback, regarding the many engine modification that that I've picked up from this site, along with others like it in the best possible combinations. A consensus of what works best in the real world if you will. Ultimately, what I am willing to do is to combine these suggestions and post the results. So please help me to pick the best combinations...Thank you.
-An economy head from 3-tech performance.
-Ported and polished head.
-An economy cam from 3-tech performance.
-XFI cam advanced 4-5 degrees
-Advanced timing sprocket (8*)
- 1 compression ring instead of two.
-Convert to a 4 wire Oxygen Sensor or
-Converted to an Innovate LC-1 wideband Oxygen Sensor
-MSD 6AL Ignition Module and Accel Supercoil
-XFI ECU or
-Finding an XFI transmission.
-Synthetic Dextron III ATFGear oil in trans
-Cold air intake.
-2″ exhaust with free flowing muffler.
-High output catalytic converter.
-Synthetic 0w20 oil
-13 inch or 14inch tires to drop the rpms
-Rolling Resistant tires that are as narrow as possible.
-Lowering the car 2 inches.
-Anything else I may not have mentioned.
Get a Metro from Geo Jeff in Marysville, WA for $4500, forget all the expense of doing the mods yourself, and I guarantee you'll get 50+mpg. I did, and I'm getting 55mpg!! Straight up, no lie, putting $25k Prius' to shame everyday, all day.