DC sport, A'PEXi WS catback - dyno #s inside
 

I just installed a DC sport cermamic coated header, A'PEXi WS catback, and gutted the factory cat this weekend. I went from a complete factory exhaust to this setup in a matter of 2hours. I really like the way the car sounds now. It is not much louder than stock driving around and it's very quiet at WOT. This is how an import should sound. :)

I pulled the car off the lift and strapped it to the dyno to see what I picked up. Here were the results:

http://members.cox.net/kcr19/accord_exhaust.jpg

I picked up 13hp in some spots in the midrange! You can definitely feel the difference on the street.

I then sprayed a 65 shot to see how it liked the new exhaust. I previously dynoed 154/188 with the stock exh/65shot. With just the exhaust changes, it pulled 172/205! :) Nitrous loves a free-flowing exhaust. :D I'll post that graph tomorrow. The car was running pig rich on the spray, which is safe, but not conducive for making the most power. So, I swapped in the 75n20 jet, and left the fuel jet alone. Peak #s didn't change much, but I picked up 10hp/tq in the midrange. Final#s were 172/210. Here is the dyno graph:

http://members.cox.net/kcr19/accord_n20_exhaust.jpg

All in all, I'm very pleased! I'm through modding the F22A (except for larger doses of nitrous) :D An H22A motor will be here in about a month, so I'll give the old F22A hell until then. 160k miles and still going strong.....

Jason

Um, if you're doing a H22 swap in about a month, why did you install these parts? Were they on a loan or are you selling them after a month? It kind of seems illogical to do a swap after a month for spending $500+ in mods for your current engine.

:werd::confused:

The catback will work fine with the H22A swap. I will upgrade to the Prelude DC sport header when I install the motor. (I heard the pipe diameter on the header was slightly larger; if it isn't, I'll stick with my current header). It's only money. ;) Plus, I wanted to see what the F22 would do with a complete exhaust system, header to catback. As I said, I was pleased with the results.

Jason

i don't see how an F22 header is going to bolt to a H22. if it does most likely it'll hurt performance since the JDM lude header is already damn good.

I don't know if the F22's header will bolt to an H22 but it will to an H23. The H23's aftermarket headers have a slightly larger collector which helps the engine operate better at higher RPM's.

which is why the 60mm collector on the jdm h22 header makes it so damn good.

if the h23/h22 header was interchangeable then the greddy 92-96 lude VTEC header would be listed to fit the h23, but it's not.

If the header doesn't work on your H22 are you going to sell it? I really need one...