Yes I have a 2001 I4 ES. Right now I just have a couple of bolt-ons. Injen CAI RD and a couple of DIY mods. I also have a Flowmaster exhaust. I am going to change it a APEXi with a custom cat back. Manderal bent pipe at 2.5 for the future. Keep in mind that the 8G Galant 4G64 is the same engine the 3G Eclipse is based on and the Dodge Stratus. They where both based on the Galant platform so any thing with the 4G64 (I4) or the 4G72 (V6) will fit. If you are going for serious hp there are a couple of turbos made from Dougs Dyno and I can't remeber the other companies out there. Currently there is a Super Chager for the V6
Click Here and the I4 is now finished
Click Here
The V6
The I4
No dynos so far but they are putting some serious hp and with a bullet proof tranny they will be able to boost more.
Jason