If you gonna get I/H/E it wont be quiet..... to make a sleeper you would need to have a turbo or a supercharger, or get a new engine!!!2004ElantraGLS said:I also drive an 04 GLS, and plan to make it a mild sleeper. You should start with the obvious stuff like Intake, Header, and exhaust. Then there's stuff like Pulleys, an S-AFC, Spark plugs and wires etc. If you want to go higher, go for a custom Turbo and or Nitrous. Make sure you beef up the tranny to handle the extra power. Don't put a bodykit on it, and try to stay away from fancy rims. Keep the outside looking stock, and your exhaust should also be kept quiet. The other will never know what hit em.
you can always adjust your BOV so it will be quiet, cant you?Elantra2.001 said:Im building a sleeper. Any fast elantra is a sleeper to the rest of the import community. When the turbo is done, the only thing that will give me away will be the blow off valve and some subtle aerodynamics that shant be discussed at this time.