i guess ill start with i have a 2000 audi a4 1.8tq mods are 034 intake 2 1/2 inch down pipe back exhust xo2 bov god speed front mount forge mbc hybrid k03 with a t3 compressor side and speedtuning stg2 tune. so last night i put on the mbc and intake the mbc is set at 15psi but im gettin over 20 and exhust is poping when it hits 21psi. i had close to the same prob. a couple weeks ago and it said miss fire so i replaced the plugs with some denso plugs. is this just massive spiking andif so how can i get it to stop? are is there other things it can be??

 

all help apreciated!!!

 

i had this mbc with my stock turbo last year and it worked great just thought that peice of info might help