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Performance problems

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Lefty:
my FT is bogging when opening the throttle quickly, I first noriced it a couple months ago, it would bog in 3rd & 4th gears when I'd open it up. The performance, since I rejetted, modded(set on fire, haha) the OE air filter & replaced with green foam, thumperstuff header & SuperTrapp can was amazingly spot-on- no backfiring on decel & plenty of giddy up, no matter what.
It's getting a little worse with the warmer weather.
I feel it's getting too much fuel when I lay into it, so i'm wondering if I should go down in size with the main jet, or should I move the clip on the needle(up? Down?),any help would be appreciated, Lefty.

wrk2ride_ride2wrk:
you might want to check inside the slide, the screw in there that holds the needle in position may have worked loose or even unscrew'd completely

I have
#58
#155
25 thou shim

and its magic

triguyracer:
I have just about the same jetting 58 pilot and 25 thous shim under the neddle and a 180 main jet with a white brothers pipe with a supertrapp with 5 discs uni foam filter without the airbox works xclnt good throttle response everywhere and pulls good to red line.this is with a stock motor no other mods to the motor

WTF304:
I'm having the same issue.... she doesn't like WOT in 3rd - 5th. It's almost like she spits instead of bog .... I've got a 55 pilot and a 160 main. Does shimming the needle really make that much a difference? And if you find your problem please keep me informed. ....

Lefty:
Shimming the needle, how do I do that?

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