ECU

ECU upgrades in Need for Speed: Underground 2 can be applied to increase acceleration and top speed.

The effectiveness of an individual part is dependent on the package they are included in;

• Street - Low increase of acceleration and top speed
• Pro - Moderate increase of acceleration and top speed
• Extreme - High increase of acceleration and top speed
• Unique - Increases stock acceleration and top speed without adding new parts

Upgrades

Package	Part	Price	Unlock
Street	Fuel Filter	250	Available from the beginning of the game
Street	Fuel Pressure Regulator	250	Available from the beginning of the game
Street	Fuel Rail	250	Available from the beginning of the game
Street	Remove Top Speed Limiter	250	Available from the beginning of the game
Pro	High Flow Fuel Pump	500	Win 7 races during Stage 3 of the career mode
Pro	Performance Chip	1,000	Win 7 races during Stage 3 of the career mode
Extreme	Engine Management Unit	7,000	Win 16 races during Stage 4 of the career mode
Extreme	Fuel Injectors	1,000	Win 16 races during Stage 4 of the career mode
Unique	-	-	Win 9 Outrun races during Stage 4 of the career mode

Incompatible Upgrades

• Performance Chip - Engine Management Unit

Notes

• Minimum and maximum torque distributions can be adjusted in the Performance Tuning menu.
• ECU upgrades increase any vehicle's maximum RPM.