i had some also fun installing all the crap into my car. i know how you feel. its good when you get it all done. my mate helped me with mine and we installed
rsm, apexi s-afc II, defi guages, defi vsd, apexi turbo timer all in one go, then after that the car wouldnt run. we sat arround checking everything couldnt work it out. we solderied everything except one of the afm wires had crimp connectors already inline, so we just used that. but the original crimp had come loose. no afm meter. that would do it. otherwise we had no problems at all, everything worked perfect. happy as pig in shit.