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XfireZ51 · 03-26-2017

Any year LT5 ECM is compatible w any year ZR-1 as long as the prom is calibrated w the correct binary layout(Mask ID) for that particular year.
Each year from 90-92 has 2 Mask IDs(ie $AF/AFA for 91), while 93-95 are all the same Mask ID($F0/F0A).

03-26-2017	#15
XfireZ51 Join Date: May 2007 Location: Chicagoland, IL Posts: 9,662	Re: ECM Labels "SNAPSHOTS" & confirmations Any year LT5 ECM is compatible w any year ZR-1 as long as the prom is calibrated w the correct binary layout(Mask ID) for that particular year. Each year from 90-92 has 2 Mask IDs(ie $AF/AFA for 91), while 93-95 are all the same Mask ID($F0/F0A). __________________ [SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX