View Single Post
Old 08-01-2014, 05:32 PM   #4 (permalink)
silvermazda
EcoModding Lurker
 
Join Date: Jul 2014
Location: East Bay Area, CA
Posts: 25

Miata - '00 Mazda Miata
90 day: 27.57 mpg (US)

Celica - '91 Toyota Celica GT
90 day: 18.1 mpg (US)
Thanks: 3
Thanked 1 Time in 1 Post
Main Post


Here's my plan right now:
-Do mods to allow for more open throttle/detuning
-Adjust intake camshaft to mimic what the prius "atkinson" engine is doing, which is pumping out air out of the piston to burn less, though I thing my ecu would have a hard time not pumping in a decent amount of fuel-aka misfires because fuel gets squirted in with the air, then its being pumped out to the intake manifold.
-Cover up the large mouth opening as my miata doesnt need a 30" radiator opening, just a 6" circle when autocrossing/spirited driving, with my granny driving I'd say 4" would be sufficient.
-Adjust cooling capacity for 180*F thermostat, the factory 192 keeps it hot and makes it prone to jumping to 215*F where factory ecu dumps fuel to cool artificially. Dyno testing has proven 200*F coolant temp for ideal hp/torque figures AKA piston rings working their best.

Already done:
-removed jack and spare tire 20+5.4=25.4lbs
-AC system approx 40lbs
-smaller batter 7lbs vs stock 21lbs =14lbs
-removed a panel or two =10lbs
-exhaust manifold iron vs steel =18lbs
-removed PS pump =10lbs
-parts store brake rotors cheaper =12lbs
-no PS AC belt (friction points)
-one belt running WP/Alt
-Mobile 5000 conv oil 5w-30

Planned:
-10lbs wheels [current 13lbs]
-13lbs tires 175/60-14 ~400 thread wear (insight had 165/65 that weighed similar, but these are more cost effective, federals FD2) [current 18lb 300 threadwear]
-partial grill block


Aero: 18ft sq frontal area x
-.37Cd with convertible up
-.44Cd with top down
-.3XX with hardtop option (approx 3mpg highway know improvemnt)

Last edited by silvermazda; 08-04-2014 at 09:55 PM..
  Reply With Quote