2.0t stutter 3rd gear 4k rpm ??

Marrow

Registered User
Joined
Mar 18, 2009
Messages
570
Reaction score
5
Points
16
Location
NULL
Hi guys car has developed a strange stutter/cough at 4krpm but only in 3rd gear WOT any ideas car runs fine other than that no CELs ?
Car is mapped with intake. Pcv replaced & rev d diverter valve fitted.
Could it possibly be fuel starvation due to map ?