Bogging when coming off full throttle

[miochain]

I have fitted a SIP Road 2.0 to my PX125 and up jetted the main. Great acceleration to full throttle in all gears. However I am bogging down or not running on as well as it was when I come off full throttle. Is there something else that I need to change ?

[scooterbooter]

Mine did that a bit before I drilled the filter. It would even stall if I didn't pick the revs up!! Your main jet maybe too large . If you haven't drilled the filter do it I'm positive the sip 2 needs it. Does it stall when it hot?

[miochain]

Thanks, No it does not stall when hot. I'll try drilling the filter. Upped to a 104 jet from a 100. Tried a 106 as well. Accelerated fine but plug looks like it may be a little rich.

[scooterbooter]

Drill the holes and upjet that sorted mine right out. She was like a different bike. I'm not sure why it helped mine but it did. If it's like mine it may 4 stroke after full throttle a little but I've always thought a bit of that don't hurt. Good luck

[miochain]

Still happening after drilling the filter. Would a bigger slow jet make a difference ?

[scooterbooter]

I'm not sure . To me it sounds like your running rich. I know that sometimes you need a bigger atomizer. I didn't but that could help . Sometimes you have have too tweak the mixture screw this may help it is probably the next thing I would do. It's a ball ache when it starts messing you about. I've done it to old bikes and pulled me hair out .

[shaunbond]

Might be completely of piste, but do you have the drip tray fitted under the tank?

[rab]

Turn mix screw on rear of carb anti clockwise a quater of a turn leave the 106 in but you may need to go back to 104 main

[scooterbooter]

How did you get on?