im having this issue where when i shift at or neaqr redline thew car loses all boost and wont go over 5k when i try to continue the pull after the shift. after a few seconds and a few pedals it will get right back in to it. and i dont get any codes from it. even the guys at zzp seemed stumped
just replaced the maf

09 lnf built bottom end all zzp intercooler pipes z54 turbo e47 opel injectors ttr racing manifold 3 bar map sensors

 

who is tuning you?

 

matt from zzp