So true SportCoupe. When I opted for 2x40mm side draught Webers c/w Genie extractors on my Toyota Corolla back in '72 I was assured during dyno testing that once the Webers were correctly jetted no more needed to be done. I will always cherish the memories which followed later that year when I entered the first 'Off The Street' drag racing event at A.I.R. During qualifying the car ran a mix of 17s and 18s times which eventually placed it in the 18s Bracket.