You can't. NASCAR engines put out almost 1,000 hp but the engines have modified to run at 10,000 RPM. That means blueprinting and balancing it, and replacing just about every moving part with racing parts made of high strength super alloys. They might be street legal but they idle at about...
It might be leaky valve seals that allow a bit of oil to accumulate in the cylinders when the car is turned off. That accumulation is quickly burned off when the car is started. Some oil is getting into the cylinders all the time but is such a small amount and is burned off continuously so you...
They won't tell you to remove them. They might point out that you voided the warranty on your electrical system. HIDs are illegal in the US if the car didn't come factory equipped with them so if you will need an inspection to renew your registration you will probably be forced to remove them...
E is larger. A few inches can make a big difference in passenger comfort and trunk volume. E has a lot more horsepower. Higher quality interior materials.