I installed a used DDMworks CAI and silicone intake hose that I picked up here in the NAM classifieds. I thought everything went fine with the install, but when I first started the car I got SES and Check Engine lights.

The codes I pulled were P0118 and P0113. I cleared the codes and everything seems to be running better, except the red coolant light is on and the center gauges (Chrono pack) aren't working correctly. The oil pressure seems okay, but the oil temperature gauge isn't reading and the water temperature gauge is pegged.

Also the engine fan runs almost constantly.

Anyone have any insight they'd like to share?

All the vital signs you wrote are not to be dismissed lightly. However if the only thing you touched is the air intake, I suspect that you didn't seat the two ECU connectors properly. Check that and proceed with caution.

I had a heck of a time getting them to seat, particularly the front one, so maybe that's the issue. Time to go back out and give that a look.

By chance did you disconnect the battery when changing the airbox? You definitely should disconnect the battery when you mess with the connectors.

I did. Learned that lesson a long time ago...

Based on your suggestion, I just went out, disconnected the battery, then removed and re-seated the ECU connectors. The gauges are working correctly now and no warning lights.

Thanks for the help!

Picture added.