I'm from the DIYAutoTune staff, and found this thread through Google. While we'd like to try this on a Celica, so far we haven't had the chance. We have managed to get it running on on other cars with similar electronics, including an Mk II Supra and a Mazda MX-6 Turbo with a Nippondenso ignition very similar to the All-Trac's. I'll keep an eye on this thread and be glad to answer questions about it.