Celica Gt4 St185 Mods

[streetcruiser]

hello

i have bought another st185, i have done more to it then my first 1, just want to know what else i can do without spending out on standalone ecu.

current mod list

3'' turbo back exhaust.

apexi induction kit

fmic 2'' piping, custom made throttle body adapter.

electronic boost controller set at 11 psi

custom oil catch tank

forge dumpvalve

standardf ct26 turbo + wastegate

1 grade lower spark plugs

i do have the turbo from a wrc st205, i have heard they hold boost for longer, but advice on weather to fit this would be appreciated.

any info would be appreciated

thank you