I have a code 8 and 14 showing on my b16a obd 0, i was wondering if either of these codes is very serious? and am i losing any powert because of them? thanks

 

try this
http://www.deepstaged.net/hondatrouble%20codes.htm

 

but how do i replace them? or even check them?

 

I got my codes from:
http://www.c-speedracing.com/faq/05.php

8 - TDC Sensor (Top Dead Center) defective circuit or unplugged / defective sensor

14 - IAC Valve (Idle Air Control) defective circuit or unplugged / defective sensor

If I'm correct the TDC sensor is in your dizzy, The IACV is on the back side of you intake mani, make sure it's plugged in.

Are you getting weird idle? Have you tried cleaning it?

 

ok get the codes and look at what they mean and if its like a sensor thats what u got to replace