j200 hew

hi all just fitted a front mount intercooler equal length headers d cat straight through 3 inch exhaust induction kit to my 96 jap import impreza has a z4 epu with a bozz speed chip but car seems to be back fireing when you come off boast any ideas on how to stop this

bolasti

iTrader: (6)

get it remapped

duds64

iTrader: (2)

thats just over fuelling on over run

harvey

iTrader: (48)

Exactly as post 2. With all these mods you need an ESL map or an aftermarket ECU like Apexi Power FC or Simtek.