Hello everyone i just recently did a coil on plug set up on my eve 8 and i was doing 20lbs of boost no issue but as soon as i did the swap knocked me down to 15 any idea on why this happened need help

 

I see you're in Oceanside, try taking your car up to RRE and have them take a look at it. Likely that you have a boost leak somewhere, changing your setup from 2 coils to coil on plug setup shouldn't change your boost at all.