Check Engine Light Problem *SOLVED*

Here im helping a friend who has a problem with his car.
After scanning his ECU on the car we find out its due to his Exhaust Mods.
Watch the video and see how we fixed the issue with a simple part.

Here is a link to the part we used.
Universal CEL ELiminator:

Adjustable CEL Eliminator:

Website for other items like this: