However, it all started badly for the visitors who quickly found themselves two goals adrift.
"We made a slow start and conceded early goals but, importantly, we didn't panic," said coach Les Wilson.
Getting into their stride, Tech scored twice in two minutes and by halftime were up 4-2.
A penalty stroke by Trent Williamson at the start of the second half looked to have secured the points but MCOB pulled one back before two more Tech goals wrapped it up.
Alex Watkins was the day's hotshot with a hat-trick and Kane Watkin scored two before joining the Central under-21 team for this week's national tournament in Hamilton. Williamson's penalty stroke and a neat field goal from Bryce McKenzie accounted for the rest of the scoring.
Rangers headed to Palmerston North for their division 1 fixture and went down 5-3 to PNBHS. Rangers goals came from Martin Atkinson (2) - another Wanganui youngster in the national under-21 tournament this week - and Patrick Reynolds.
In the Manawatu division 2, Marton lost 3-1 to Massey.