This my experience replacing the header for the Honda Fit. Note this is an experience that I want to share with and in any way instructions. There were some bumps in the road, but overall fairly easy to do and took me an hour and a half for being my first header install.
1. Remove the heat shield. Held by 3 10mm bolts. Can be accessed thru the top of the engine compartment.
2. Loosen the 5 bolts connected to the engine. All are 14mm, but the bottom three are bolts and top two are nuts.
- I loosened them from the top, but found it easier if I removed them from the bottom.
- To access the header from the bottom, the protector cover for the front axle must be removed using 10mm. Looks like a black U shaped protector.
3. Still from the bottom loosen the bracket connecting to the header using a 12mm. Loosen at the header as well as the bolt connected to the transmission.
4. With 12 mm remove the bolts with springs connecting the downpipe and the header. I had a air rachet which is soo handy.
5. Unclip the connection for the O2 sensor. To disconnect is to push down on the bottom part of the clip. The top part of the clip disconnects it from the bracket.
6. While moving out the downpipe and some wiggle-ing, it was out. My friend was able to squeeze it out from the top.
7. Put the new header back reverse order, except the heat shield.
The Megan header I felt more the mid range between 3000 to 4500 rpms. I still have the remaining stock system and no aftermarket intake either. Just have some patience and you’ll get it done.
Here are some pics.
Here are two of the 5 bolts to be removed from the block. Top one is a nut and bottom one is a bolt.
Bottom bracket that supports the header that bolts onto the transmission.
Here is the pic of the engine without any exhaust manifold. You see the two studs remaining in the block.
Out with the old
In with the new
Bottom bracket connected to the new header.
Tightening up in a star motion.
Finished product
Enjoy. I don't have pics of the O2 sensor clip or the protector the covers the axel. Have fun with it.
