Problem with accleration

[Meukowi]

So i've noticed on my 1992 GS that when i speed up hard it feels like it won't get enough fuel, If im pressing the throttle all the way down it 'suffocates', but gently moving the throttle it acts normally, but ofcourse.. more slower accleration, and this happens mostly on 3-6k rpm, over that it runs fine, except for longer distances full throttle, it again, feels like it runs out of fuel, last owner said, since i have had it less than a week that he cleaned carbs and the gastank, rejetted and switched sparkplugs & ignition coil, voltage regulator and new airfilter. New fuellines are on they way, but doubt that they're the problem.. any ideas?

[Bluesmudge]

Since the previous owner "rejetted," it could actually be getting too much fuel at full throttle. Did he say what jets he put in?
Is the new air filter a stock paper Suzuki filter or something different?

[mr72]

Vacuum leak, float level too low, etc. Best to assume something went wrong with the most recent work.

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[Meukowi]

Its K&N filter, and the earlier owner tried to fix these problems with all the stuff i said..
Anyway, i drove a little longer trip today and noticed that its all good if i rev all gears up to 8-9k and shift, too early and it starts to die, mostly on 4,5 and 6th gear, even got up to 105mph with this tactic, also tried to shift from low rpm 4-6k, but dead end at 75mph. It just won't, like out of power to acclerate normally. Might be a feature, dunno, still pretty new bike for me.

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