car is bogging sometimes.....

[DSM1G]

yea so my car likes to bog down (easiest way to describe it) sometimes. I will be driving and when i go to speed up the EGT gauge will start to rise alot and i can hear the turbo spooling but my speed wont be increasing. So I will let off the gas and step back on it and do that a couple of times and the EGT gauge will go back to around 14 and stay there and run fine. Just wondering if any of you guys would have any idea what it could be.
Thanks for any info.

My current mods on my 1993 eagle talon tsi FWD (AT):
QPR built motor
evo 3 big 16G turbo
manual boost controller set to 14psi
walbro 255 fuel pump
ported 2G exhaust manifold
2.5'' custom downpipe to highflow cat 3'' all the way back to muffler tip
K&N air filter
IPT stall converter