hi i have a mk1 octavia vrs with a cat back miltek bmc induction and a tip pipe keep on getting maximum boost limit exceeded fault had a new n75 about 6 months ago could it be that these mods are causing it to overboost 20psi mapped by more bhp on when i bought it or is it a problem with the map thanks

i would suggest you get the map looked at might need a tweak with the added mods done.

Did the N75 fix it last time?

Are you using the N75E/F revision or are you using the brown coloured J or H valve?