Drill your hole where you want it. AEM's Greg Nakano puts his engineering training to work on this difficult task.
|The hole is done. If you don't have a step drill you should get one. Every car guy needs one, it makes a lot of hole drilling chores much easier. I use mine all the time.|
|A close up of thrilling drilling action!|
Completed hole; note the burrs on the edge, these should be removed for best results.
Greg deburrs the hole with a deburring tool. Really if you are into cars you should have one of these but if you don't a larger drill bit or a small file will work just fine, it just takes a little longer.
Next apply the heat resistant gasket. The gasket has a self adhesive backing to hold it in place while you put it together to make things even easier. The gasket is important because leaks can throw off the accuracy of the sensor.