Help... In Cali

[chippies]

my bad guys im rarely on this... should get the app... thanks by the way for respondin... well i got a 7MGTE u kno all most MK3 supra and its auto.. sadly -n- but i rebuilt the head as most MK3 and i put Arp head bolts and i got it runnin but wen i drive it and i hit boost it like bogs or sumthing idk wat it is... like it starts puttin and the Rpms jump back and forth idk why but it only happens wen i hit boost and rarely wen i drive normal... my friend says its a loose cuppler but their all fine and tight... haha get it ;-) haha anyways idk wat it is... another friend says its a vaccum leek idk if this is true then another friend says its the sensor on the throttle body the one on the side... im so lost... :-/ u guys have any ideas.... o also my stereos not playin music i checked the fuses and their fine any ideas on that too... im honestly so lost...