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Owner: mechcd
Penelope: 1999 Pontiac Grand Prix GTP
Displacement: 3.8 L
Fuel type: gasoline
Transmission: automatic
Curb weight: 3495 lbs
Coefficient of drag: 0.33
Frontal area: 0 sq.ft.
Instrumentation: ScanGauge
Description: ZZP SS headers (1.75" primaries, 3" outlet)
Hi-flow 3" SS cat
3.4" SC pulley (~7psi boost)

The go-fast stuff actually impoves FE when it's all tuned right and i keep my foot out of it.
Build Thread:
Current Mods: "(un)Bolt and or Tape-ons"
Blocked upper grille
Sealed around headlights
Sealed front and side edges of hood
Tires at 44 PSI
Block heater
Ecopia EP422 ECO tires in front
Swapped steel impact bar w/ lighter aluminum one
Power steering bypassed

Front wheel spats
Passenger side mirror delete cover

Planned Mods: extended air dam at radiator
Switch to manually enable Boost Bypass Valve
Underdrive alt pulley

side skirts
rear diffuser some day?
Official Fuel Economy Ratings
EPA city 16 mpg(US)
EPA highway 25 mpg(US)
EPA combined 19 mpg(US)

Actual Fuel Economy Performance
Lifetime 33.8 mpg(US)
Last 3 tanks 30.03 mpg(US)
90 days 31.96 mpg(US)
View Fuel Log
Last updated: Apr 21, 2016

(Created: 2014-12-18 09:18:57 / Modified: 2016-05-04 19:54:01)

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