Kauai struck first, but Konawaena came back with 32 unanswered points to come away from the Garden Isle with a 32-7 win on Saturday night.
Micah Laban bookended the Wildcat scoring with touchdown runs of two and seven yards.
Sophomore quarterback Austin Ewing went 9 of 17 for 130 yards and a touchdowns against the Red Raiders. Ewing found Kayson Mahiai on a 28-yard strike, and senior Tristan Fleming-Nazara tossed a 15 yarder to Kupono Kane.
Kane also found the end zone on defense, taking an interception 97 yards for a score.
Senior defensive end Torin Tuppein led the way on defense for the Wildcats with 10 tackles. He also had a forced fumble that he recovered. Jeriah Cacal and Phillip Grace tacked on interceptions.
The Wildcats finish the preseason with a 2-0 record, and open the BIIF season on Friday at Waiakea.
Konawaena 12 13 7 0 — 32
Kauai 7 0 0 0 — 7