it was dyno tuned, and when i started having this problem, i took it back to him and did a street tune and rode around awhil then he burned the new chip. says somehow the tune he put in before "changed" and some how i got leaner, which is impossible i havent touched the motor. i called to day and he is saying it could be a mechanical problem

the injectors are precision 750s, not suree on the impedence.

fuel filter is probably 6-10 months old.