carb needle question

[zxr400l3]

i have both oem and dynojet needles, they are complete different, now i am with the dynojet needles and 96 main jets, but i think i want more power ... also have beet headers but i need to make the downpipe because they are hard to find ... can someone give some advices on the carbs? what needle is better to use, the original one or the dynojet one ... also the jets ... can i buy bigger?

[parby81]

dynojets would be best, but you need it set up on a dyno properly, book yourself a session

[AFM327]

I've got flatslides with custom needles and lots of dyno time.