[nathan555gf8]

HI THERE . new here i have a v2 555 wagon recently purchased, have a prob its not pulling past 5500 rpm it will in 1st gear but not in any others ??? it has a hks bv and a induction kit in my experiance both unsettle the classics, it has a SC ecu with a esl daughterboard, still running the slanty rubbish ic, and fully de catted anyone got any ideas ??? holds a steady 0.9 bar until it hits 5500 rpm then just backfires really loud if on boost .. Dont know much about history nor does the previous owner , has a fresh forged rebuild with recipts for £5100 has had tons of money spent on it by the looks of it.

shall i just use a standard ecu z4 ect until i know whats going on or anyone got an idea whats causing the problem so annoying taking it easy now lol thanks in advance nathan