RX7Club.com - Mazda RX7 Forum - high rpm hesitations @ woot and blue smoke

Hi guys...

so, my car is running fine, it pulls like hell and i can drive it like every other day... BUT...

when i drive my car hard under boost and high rpm the car is bucking like a bitch!
i don't know if its boost cut!

i have a 3" catback, maincat is intact and prekat is holed out!
my stock boostgauge is climbing up near the 40's, then the car is bugging, then the boost falls a little bit... so i think to 30-35!? but i have this hesitations also when the gauge only reads 30-35... and the neddle is not jumping up and down... so i think it has nothing to do with fuelcut?

after i've driven my 7en hard one day on the highway it smokes like a bitch , and the exhaust gases where NOT smelling like water or oil... the smoke was white... maybe condensating water because the hot turbo/cat/catback ?

several day after this, the smoke is gonna lesser then before... but it also smells funny...

now, i have some light blue exhaust gasses... my mechanic says that it's burned oil...
but the car don't need more oil then before !?

so, whats the problem?
light blue smoke, hesitations @ WOT = ?

maybe my plugs are fooled out? they are 20.000 km old, i change them next monday... maybe they are very dirty, and because this the A/F/omp oil isn't fired up right -> Hesitations and light blue smoke... ? is this possible?

i also pull my IC out this weekend... i've cleaned the IC 3 or 4 months before... so i think its a good indicator to check if my turbo is going!?

pls give me some input! i don't want to rebuild this engine... i'm searching for a project core for 3months now, but i don't find the right core for me here in Aut :/

thx 4 your time!