[WB9MCW]

Originally Posted by tccrab

There are drivability issues, notably a high idle in closed loop that was corrected by an updated prom (AYBK).

Aftermarket proms are available from tuners that provide better fuel maps, removal of CAGS, cooler engine operating temps by turning on the fans eariler, and timing adjustments to increase performance. They also provide custom tunes for modifications like headers, engine mods, etc.

TomC
'90ZR1 #792

Best dawg gone single mod I have done to my ZR-1!!!

ESP the cooler op temp's and getting rid of the "STUPID CAGS"---