problem not solved still need help

[nismonut21]

i am still breaking up under heavy throttle and cannot figure out why? I have searched over and over again on here and still no help. when i first start the car it idles and boosts up fine. But then i go to take it down the road and as soon as it starts making boost it begins to break up and the car begins to buck and jerk. i am lost please help

[Blown240sx]

Its a boost leak, either coupler or BOV.

[fregisr]

clean you maf and tps

[nismonut21]

all ready done with all of that. did not help my problem what so ever

[Blown240sx]

Dude you have to either have a boost leak or your MAF is freaking out when you hit boost.

[FAST-DATSUN]

what kind of plugs and what are thay gapped at???????

[Blown240sx]

Well that to yyou could be blowing out spark.

[nismonut21]

well i know i do not have a boost leak i checked it 3 times today and it is not leaking anywhere.

[nismonut21]

i have ngk heat range 7 and they are gapped at .030

[nismonut21]

do you think it could be coil packs or something like that i have replaced a buch of stuff already i just want to figure this out so i can move on with the car

[karmakaze]

i have ngk heat range 7 and they are gapped at .030

how much boost are you running? i had to gap mine at .27

[da40]

still think its that maf man! try a diffrent one or something sounds like a maf to me