Ok so at light acceleration on building boost I get a split second where I have a loss of power and my wide band goes between 15-17 then back to normal. What could this be?? Idles fine no cell wide open throttle is fine. Cleaned the maf the connectors are dirty but have nothing to clean it with. I'm running the unichip piggy back? Anyone had this issue before??

 

did u check your fuel pressure

 

was it fine before or has it been like that from the beginning?

 

Sounds like a vac leak and/or a hole in the fuel map.