No it will not do much for you. It is just an adjustable resistor that ties into your IAT signal, which tries to fool the car into thinking the air is colder. Colder air means the car will add more fuel and maybe a degree or two more timing, but this is useless if the air isn't actually colder lol. In the end, these things are a waste of money.
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2004 Optra/Forenza/Lacetti
F28 6spd Gearbox & KW V3 Coilovers
T04B V-Trim & E-Manage Blue
Boosted and Daily driven since Dec. 2006
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