L8 you need for this conversion(closed loop) post a pic of yours up and we can tell you if yours has no mounting lugs and has a red or green sticker its poss a L8 (4x4 ecu)

your lambda has a bad earth if responding to your tunes,most lambdas will work post a pic up and we should b able to say...

you will need

L8 ecu + std babyboad
PF09 TPS sensor
Lambda sensor
MSD closed loop chip

Two ign amps
Loom
Coilpack (1.6 sierra cvh or similar)
Ign leads
ECU converted by MSD to run coilpacks

Hope this helps