Vehicle: 2002 Civic Ex
Product: DC Sports 4-2-1 2-piece Ceramic coated header
Vendor: www.ptuning.com
Cost: ~$390
Rating: ****

Ok this WOULD have been a 5 star rating if not for the CEL troubles I went through, otherwise this header is unbelievable!!! Noticeable and I mean noticeable gain in the 3.5-5ish rmp range, even on a SOHC this could push you back in your seat. Great header, still haven't found a product to clean it with, have been using Mothers Mag polish but very sparingling and not often.
Installation was a breeze, as long as you could get your stock header off. Some bolts on the stock were rusted so it proved a challenge but actually installing the DC header was simple, its a bolt and go setup.
Highly recommended!!!

 

how did you fix the CEL when it came on?

 

Casperelectronics O2 simulator.

 

is it a race header?

 

No, normally a race header is a 4-1, this is more a street/strip application.

 

well what i meant is, does it replace or get of ur catalyst converter?

 

yes it comes w/ what they call a cat, but really just a test pipe.

 

Hold it! Hold it! Now I am confused...do you have to get off the primary 02 sensor and put in a 02 sim?
Not good for mpg's

 

No you do NOT TAKE OFF ANY O2 SENSOR. What you do is add an O2 simulator between the O2 sensor and the ECU and NOT the primary, the after-cat O2 sensor. Casperelectronics has a "plug and play" for about $70.

 

So what you're saying is there are two o2 sensors on these cars, one in the manifold and one after the cat?

And what you had to do was put a simulator in the o2 circuit between the ecu and the after cat o2 sensor? And it's adjustable some how???

Would I need something like that on my '00? And do I need a fancy plug and play if I'm just sticking with I/H/E?