dboyle23
10+ Year Contributor
- 297
- 14
- Jun 10, 2010
-
Chicago,
Illinois
So I installed an aeromotive afpr, but how do I set the pressure?
The nut on top doesn't change anything.
The nut on top doesn't change anything.
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I'm not sure I agree with your assessment.
The point of a FPR is to maintain a set pressure even with changes in the incoming feed pressure and the variable demands from the injectors. Some amount of pulsation is going to result from both and the dynamic response of the FPR but if the pressure changes when the voltage is higher and you have low duty cycling of the injectors from what you set with the car off I suggest you have other things also going on.
We tested it and got different readings.
If what you are saying was true, the readings would have yeilded the same base pressure regardless if the car was on or off, we are talking about base pressures..... and they dont match. The point of the FPR’s VAC SOURCE is what allows the dynamic changes With base there should be no dymaic change happening.
With activating pump via link, you have no injector response, vs running where there is voltage and consumption applied to your base calculations (without vac)
Not only that, you will have a weak pump feed drawing off straight battery with the car off (12V) vs with the car on (14V). Your pump will be stronger while the car is actually on thus allowing you to set a proper base pressure. Assuming you have a rewired pump
Thats what we are arguingYup very easy! Loosen the nut on top. And tighten down the Allen bolt to increase pressure, if you have DSM link you can leave everything hooked up. Turn the key on, leave the car “off” and turn the fuel pump on in link to set your pressure.