what kind of upgrades can u put in a eclipse gs?(turbos,etc.)?
Would help to know which generation eclipse gs you have. There are 4 generations of gs's, all with different engines. (Not sure about the difference between 3g and 4g engines). Star and Hahn both make turbo kits. But without a lot more work and money you won't be able to boost too high without ruining the engine. Also your engine has to be in really good condition without a lot of miles before putting on a turbo kit unless of course you plan on doing an engine rebuild. Check out the website below if you have a 2g non-turbo eclipse. They can give you great insight on aftermarket mods you can do.
nos, head studs, turbo, better tires, exhaust, struts and springs, intake, or buy a Starion 1987-1989 come from the factory with a turbo and rear wheel drive. just bolt on a 16G turbo and take off the first cat converter located on the down pipe and you got a 300lb 320hp rear wheel drive car.
Try installing first a new suspension system strut and sway bars (sometimes handling is abit more important than power). Then a turbo kit, air intake, and exaust. If you want, a bodykit. But more important, try to keep the ride as light as possible like carbon fiber hood and light rims (18 is maximum, 19 above is too heavy)