I have an ecu from a '91 NA Z, but it's socketed by Ash (ignore Ash's program label) and has a JWT chip for a '90-92 tt motor tuned for 555s and dual pop. This is a great setup for a NA>TT swap! Entire ECU (ecu + JWT chip) for $200 shipped, email me if interested.
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90-92 man fed JWT ECU dual pop 555cc injectors - TriniTT23:39:51 11/12/07