Ok I did the search, I read the volume 3 to ultimate TBI and still I have questions. I have an aftermarket afpr from Turbo City and a fuel pressure gauge (electrical). The afpr is not vacuum controlled.

1. If my stock fuel pump puts out 9-13psi and I am reading 12psi is it worth putting in the afpr?

2. Since the fuel pressure gauge is before the afpr is the gauge going to read only what the pump puts out or what the afpr is doing?

3. If I do put this in how do I know where to put the initial setting? Screwed all the way in, screwed all the way out, or half way?

4. Do I have to adjust the timing again after putting this in?

Thanks for your trouble.

 

1: Yes. Being able to adjust your fuel pressure according to your car's needs and mods is always a plus.

2: The AFPR is a bypass type regulator, which means it's keeping the pressure constant by bypassing fuel to lower the pressure. The gauge should be accurate.

3: Halfway would be my guess. Never really thought about it or had a problem.

4: Going over all the adjustments is a good idea. Set the minimum air at the very least.