I have a family member that bought the FI Tech that works up to 600 hp. The application is a GM product. My question is that the kit only came with one O2 sensor, and how does that work with a V8? Wouldn’t you have to have dual exhaust? Or rather two O2 sensors?
In my little bit of research, all the kits only come with one.
Because it’s not multi port but speed density, you only need one. I have a AFR gauge to plug into either side to check everything. I also swap the o2 side to side. If you have a good intake, everything should be ok. Check the temps on each pipe coming off of the head.
I have a dual FI setup on my 409 W chevy, pushing 600hp.
All these kits come with only one sensor for the reason blue68cat mentioned.