GSX -- Boosting Conflict

[GSXeclipsePSI]

Ok... I one day hopped in my car and it started acting up. It feels like its fuel cutting... But its not. I'm running 15-16psi on good days... and somethings pressure drops on other days.... The car like to backfire and shit. I can't get on it without it skippin' around/puttering... I can't race, cause it's loosing power....

WTH is wrong? I have no idea. Awhile back my CEL came on for MisFire Cyc.3 , 02 Malfunction and TPS/Pedal Position Sensor?

The car has 87k, Greddy TypeS, Upper&Lower IC, 3"Downpipe, NoCat, stock exhuast back!

 

[SpeedFreak03]

How old are your plugs/wires? Replace em with some new NGK BPR6ES plugs and new wires (NGK magnacore or OEM) if their old. Most of the time your symptoms (misfire, jumping, etc) is old plugs.