Ivor McCullough carried on where he left off at the end of last season – winning Formula Ford races.
The reigning Northern Ireland champion and Brands Hatch Festival winner clocked up another two victories in the opening race meeting of the season at Kirkistown.
On a day when the Northern Ireland and new all-Ireland championships combined with the UK-based FF1600 Superseries, McCullough qualified on pole position in his Van Diemen and went on to win the two main races of the day at the Co Down circuit.
Both, however, were disrupted by yellow flag incidents and the second race was ended after just five laps following yet another accident. No one was injured.
In the first race an opening lap incident involving Patrick McKenna, Geoff Richardson and Kevin O'Hara saw all but the last couple of laps run under yellow caution flags with McCullough coming home ahead of Noel Dunne and Noel Robinson with Jonny McMullan in fourth place.
Again it was McCullough in race two, the champion starting to pull away at the head of the field from Robinson and McMullan before the red flag was shown after another incident.
Other winners included David Beatty (saloons/GTs), Stephen Donnelly (roadsports), James Turkington (Ford Fiestas), Colm Blackburn and Ray Moore (Formula Vee), Kevin Sheane (Formula Sheane) and Dylan Curley (Ginetta Juniors).
Meanwhile, Donagh Kelly won the Circuit of Kerry Rally, finishing almost one and a half minutes ahead of Kenny McKinstry.
The former NI production champion took the lead in his S11 Subaru after Declan Boyle, who had dominated the first three stages, crashed out as rain arrived on stage four.
Kevin Barrett (Subaru) was third, half a minute behind McKinstry's S14 Impreza, and Alan Ring (Mitsubishi) won the production class in fourth ahead of top two-wheel-drive finisher Frank Kelly (Ford Escort).
Derek McGarrity and Thomas Fitzmaurice didn't start after problems with their Subarus.