Check your catalytic converter, one of them is probably plugged, more than likely the first one. Loosen up the bolts holding it on so there is an air gap and then see what happens. If the power is back you found your problem.

2001 Sportage, TJ 106's, Everet spacers and bumpstops, Bilstein shocks on the rear, cone filter, Crager wheels, 235-75-15 Goodyear tires. Custom front winch bumper by Dave Scott. Currently DOA, but it is a work in progress.
2011 Kia Forte EX