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Originally Posted by zr-1assassin
here is the deal... i just got my 90 about 2-3 weeks ago and im looking over the paperwork that came with it and there is a receipt in there for an F-EPROM part#16163905 in 5/06. why??  was there a problem? why would a guy replace the eprom? surely this isnt routine maint. anyone had to replace theres for any reasons? |
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