i have a td04 on my wrx wagon,what differance would i notice if i change it to a td05
also mine cant be remapped(97/98) so if i did do the above, could i do it without a remap

 

Hi there with TD04 you will see top after remap 280BHP if you are lucky,with TD05-16G you will probably see 340-350BHP if you are very lucky,but you will need supported mods aka injectors
97-98 will be remaped,but you are need ESL board if you want run standard ECU,if you want run aftermarket ECU here is some Apexi PowerFC,Simtek