Not sure what specific year your NSX is, but from your CEL codes, it's got to be a 95+, maybe a 2000?. Anyways, here are some part numbers to help you out:
P0141 - Denso P/N: 234-4093 - $92.54
P0155 - Denso P/N: 234-4730 - $178.55
The above part numbers only works for 2000 and up NSX's. If you...