Have a 1996 Manual converted Galant and am currently trying to turn up the boost , has been road tuned but cannot get it to go above 12 psi without misfiring/coughing amd farting above 4.5k rmp , if i lower boost to around 9-10psi it misfires/coughing and farting between 4.5k and 5.2kish rpm but sorts itself out after that, am utterly confused as to what it is , have checked plugs , replaced coils , hardwired the generic walbro upgrade mentioned alot on this page , FPR
Have searches forum but dont know exactly what to search , would greatly appreciate any help as its starting to piss me off