CHECK ENGINE LIGHT AND PRE-CAT REMOVAL QUESTIONS

Please read before ordering or installing

On any vehicle, where the stock manifold design incorporates a catalytic converter, there will usually be two O2 sensors. One reading before and one reading after the cat.

By removing this converter (or pre-cat on cars with two converters) when you install a header, the second O2 sensor no longer reads what it considers to be the proper air fuel ratio. This is why you will get a Check Engine Light or CEL.

In order to avoid a CEL, you will need to do 3 things:

1. Install an O2 sensor fitting behind the second cat. If your car is not equipped with a second cat, there are many high flow universal cats available that can be installed in it's place.

2. Extend the wires on your second O2 sensor to reach the new fitting.

3. Plug the existing O2 sensor fitting in you header

Hotshot Performance provides you with an O2 fitting and plug as well as a set of re-location wires when you purchase your header.

Installation of the new fitting should cost less than $50 at any muffler shop, and you can use the plug to seal the new fitting until you can either extend the O2 sensor wires yourself, or you can go to a professional and have it done.

ALL ITEMS INTENDED FOR OFF ROAD USE ONLY.