pierburg numbers???

[rookie_rod]

never really relised it before but i got 3 2e3's and the tops have 10, 15 and 26.1, and the bottoms have 22 , 25 and 22, what do they mean and whats the best 2e3 combination if theres a difference, im guessin its something to do with jets?

[mowgli]

http://www.elringparts.co.uk/Pierburg

these are the uk agents, if no-body on here can answer you, try them