Severe bogging at WOT/popping sound
Hi all. I searched far and wide but cannot find a solution to my issue. So I will start with accurate bike history... I just bought a used 620ie monster. Before I bout it, it was sitting for about 6 months. Also the bike had bad gas while sitting.. So soon after buying bike, I drained the old gas, and added seafoam, along with new gas (regular unleaded..maybe mistake??).. Bike would just turn over but no start, I checked over all things electrical by this point. So...I put the bike into a mechanics shop. A week later, bike finally starts! He said a line connected to my fuel pump was clogged, thus preventing my fuel pump to activate. So I ride this bike home, and it runs great!! Only thing I noticed was that throttle was touch and reved high when barely moved?? So next day, I get up to go ride again and now it runs horrible! Stuttering, dying at low idle, it bogs really bad if I give it throttle and almost dies at WOT. Also, I hear a popping noise in the gas tank when I'm at WOT. But as of now, I'm stumped. So what I've done so far.
Changed fuel filter
Added 1/4 seafoam to gas tank
Ran more seafoam thru throttle body at idle
Check all air hoses
Cleaned and air blowed fuel injectors with conpressor