Acura RSX Race Header Installation

Tools Required

• 14mm deep socket
• Flat head screw driver
• 12mm deep socket
• 6" or 10" extension
• Pry bar
• WD40
• 14mm wrench (ratcheting would be preferred)
• O2 socket
• Anti-Seize
• Brake Cleaner

Step One

Remove the nuts on the exhaust and the catalytic converter. You may run into some issues here with the nuts looking like the picture and being all rusty. We normally use heat and an impact gun that works well, you can also use PB Blaster.

Step Two

Remove the O2 sensor plugs. Use a flat head screw driver to open the white plastic tab holding the secondary sensor.

Step Three

Spray some WD40 on both side of the rubber hanger. Using a pry bar, remove the rubber hanger.

Step Four

Remove the two spring bolts holding the cat to the header.

Step Five

Remove the two brackets holding on the sway bar and let it hang down. This will give you room to remove the stock header and also put in the new one.

Step Six

Remove the 2 nuts and 4 bolts holding the header to the head and let it drop down.

Step Seven

This is a little bit of a tricky part, what you need to do is run the header up the same way that the stock one came out. What you need to do is work the header up as much as you can and swing the sway bar up at the same time. You can't get the sway bar back up with the header bolted to the head so you have to get the header past where you would bolt it on and then wiggle everything into place. You might want to get the help of a friend for this part.

Step Eight

Bolt the header to the cylinder head reusing the stock metal gasket.

Step Nine

Install the O2 sensors into the new mid pipe. Put anti-seize onto the threads of both sensors so they are easy to remove if you ever need to.

Step Ten

Bolt the spring bolts together but leave them lose so you can adjust the midpipe so that it lines up with the exhaust.

Step Eleven

Install the supplied gasket and the bolts into the exhaust. Tighten them down and then tighten down the spring bolts and reconnect the O2 sensors.

Note: Be sure to use some brake cleaner to wipe off your fingerprints, oil, and dirt. If you don't then it could burn them into the header and it would look ugly.