code 51, now what?

[phreeek]

I'm thinking of upgrading to 555cc injectors what is the easiest way to go about this?car is a 91 TT with a POP charger JWT ECU, boost jets, and a SZ cat back.I did see that SZ has some (new?) 8bit chips for the early ecu's question is can I install their "clock chip" or single with the JWT ECU?

http://www.specialtyz.com/fueling_szswitchers.htm