Depends on what it costs for you to buy it.
A streetflight unit will probably run you ~$800 for everything. It's worth it though, you could spend $800 on mods for your car and not get as much power as you would from the denser air provided by the intercooler.
Ever drive your car on a cool morning and then drive it on a hot afternoon the same day? Notice how much more powerfull it was in the morning? Thats denser air, just what an intercooler will do for you. People will talk all the talk about bigger filters and MAF's and whatever, but ask anyone and they'll always agree that a cool morning probably yields better results than a warm day with all those mods.
