checked for all vaccum/air hose related?
could be cracked old hose and boost leak...when maf sensor installed, the air leak maxing out the maf sensor calibration and put boost cut/fuel cut.... especially if using tulang ikan as boost controller
could be cracked old hose and boost leak...when maf sensor installed, the air leak maxing out the maf sensor calibration and put boost cut/fuel cut.... especially if using tulang ikan as boost controller