need help tuning

[blaster 0108]

k i searched i did a plug chop its black, but here is the problem, i went from a beat ass pro x piston to a wiseco would just doing that change the way the quad runs , it used to pull all the way through the gear now it bogs , not real bad , but it doesnt pull too good til it gets to the top of the gear. here is my setup. fmf pipe silencer, uni filter, 270 main jet the weather around here averages 70-80 do u think its just my main jet? or do i have to mess with the needle and pilot jet? like i said it ran good til i put a good piston in and stuff and i properly broke the piston in too . any help is appreciated also when i rev it up in nuetral the idle stays a lil high then lowers is that the air screw i was told to turn it inwards to take care of that ?

thanks guys

 

[blasterboy91]

it would prolly help...i mean it cant do bad...but i think you should def feel the dif...

 

[blaster 0108]

what should i try first the main jet ?

 

[Awk08]

a 270 sounds a little rich to me

 

[blaster 0108]

should i go down to 260

 

[baycityryda]

i have the same problem going on

 

[2StrokeBlaster]

yea if it idles high and then goes down then turn it inwards and see how it goes
for that pipe and airfilter i would try a 240-250? but its better rich then to lean. you can buy the jets individualy
the main jet is top end the air screw is bottom end and the needle is mid
i would work on the main jet first, then air screw, then needle

 

[blaster 0108]

seems to be the worst a 1/2 throttle just breaks up then eventually goes would that be lean or rich