FSTFBDY, I was simply trying to let the thread starter know that not being able to use an O2 sensor would not prohibit the use of EFI. Period.
Re-read what I said regarding the headers. Water + baffles are pretty much required if you want the LEOs to leave you alone. Most LEOs seem to think that water provides muffling even though it is primarily for cooling the pipes. This goes back several decades........... Most lakes here in NorCal check for baffles before allowing you to launch. If you have baffles but decide to run without water injection, you will be far more likely to be stopped by the Law.