After i drive for a good 20 minutes i see my dash starts to flicker a little bit and when i turn on the overhead light that seems to flicker a little bit too. I also noticed that my tail lights flicker a bit too after my car is warmed up... I think it may have something to do with the AEM EMS.

Its not really a noticeable flicker but its rather annoying.

 

It may be your alternator and not the AM EMS. There were some threads on this a year or two back.

https://www.s2ki.com/forums/index.php?showt...0&#entry6927384

 

Mine does the same thing. started when I plugged in the EMS.

 

grounds and ems are very importante... take all the grounds off, there are 2 sets in the engine bay each behind each headlight they are octapused grounds take them off and clean them good i mean good do the same with the grounds in the trunk near your rear lights behind the carpet and make sure the motor ground on left side of car from frame to motor is good i had the same problem and that fixed it my grounds were all crudy and black