What's this sound???

[TROYXTROY]

It happens when I'm backing off the gas when driving. It's kind of like a backfire only quieter. Only happens when I back off the gas after accelerating. Kind of like a blub, blub, blub sound That's pretty much the best way I can describe it!
I know others have this problem. Lean condition? Rich condition? Exhaust leak? What do you think?

Thanks
-Troy



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1995 GT Convertible, 5 Speed
Novi 2000 showing 9# of boost, Pro-M 77mm Mass Air Meter, 30# Injectors, 255lph Walbro Intank Fuel Pump, Bassani Equal Length Headers, X-Pipe & Cat-Back, Steeda G-Trac Stage 3 Suspension, Kenny Brown Extreme Sub System, Pro 5.0 Shifter, Cobra R Rims, FRPP King Cobra Clutch, Steeda Adjustable Clutch Quadrant & Cable