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I have more cost than return, but over time I'll be saving, big time since I havn't installed my coroplast fully yet.
10x 30x36 sheets of coroplast - $100
Scan Gauge 2 - $135 used from ebay
Cost of car to start with a better base line - $700 (and $500 in parts to repair)
Unmodded MPG: 32-34 highway @ 65-70mph (only 2 tanks worth)
Modded MPG: 40-50mpg trips, should average atleast 45mpg.
Fuel savings is around $100 on this car, or $144 if compaired to my last car (26mpg is about what I got average)
Total cost of material for modding car: $235
Net loss: $135 but getting lower all the time, should break even in 3k miles
After a belly pan, wheel skirts, whell covers, some sort of boat tail, etc.... my MPG should go up and making the savings jump quicker with no added cost.
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