Evo 8 ecu in 1g whining issue

[ZDA1728]

Hey guys just wanted to ask a question to the people who have experience with evo ecus. I recently have installed an evo8 ecu in my 1g and it drives and runs great however it has been getting really cold outside and when I put my key in the on position before a cold start I hear the ecu whining for a good 10-15 seconds until I start the car, it eventually goes away. Any thoughts?

 

[Lowestform]

Are you sure it's the ecu and not the Mpi relay?

 

[xlr8ed]

Some people have said that capacitors can whine in the ecu. Have some turn key and have the cover off ecu. Maybe you could trace it better.

 

[BostonGST]

do you have any cold start issues? My car takes a while when it's cold with the evo ECU

 

[ZDA1728]

I had an issue where the car did not start one morning but it was brutally cold that day. It is still cold here in Chicago but it has been turn-key day to day so far. The whine happens from time to time during a cold start when the key is in the on position but car has not been started yet. This issue was not present before I switched to the evo 8 ecu, however my car runs leaps and bounds better on evo8/SD setup. I guess my question is, is the normal for the caps on the evo 8 ecus to whine a bit on very cold starts?