Adjustable fuel pressure regulator?
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Re: Adjustable fuel pressure regulator? (Curtis629)
Increased fuel pressure results in better atomization of fuel but you wouldn't realize much gain on a bone stock motor.
This mod is normally used in conjunction with air flow improvements to match fuel to air at WOT.
This mod is normally used in conjunction with air flow improvements to match fuel to air at WOT.
Le Mans Master
Joined: Jul 2001
Posts: 8,183
Likes: 3
From: Santa Maria, CA
Re: Adjustable fuel pressure regulator? (Curtis629)
a little bit of info I gleened here and there, is that more pressure would add more fuel to an already rich running motor. I understand GM tunes some of the fuel curves somewhat rich. (?) My own empirical testing further verified this to me. I actually had an AFPR, 26lb'ers at one point. Motor ran like crap. Took the AFPR off, returned to stock press. (no other changes) and it got better.
Also,
a remote possibility when someone goes too extreme with pressure, it forces the injectors to stay open.
:nono:
[Modified by 89 Paul in cal, 7:51 PM 3/31/2002]
Also,
a remote possibility when someone goes too extreme with pressure, it forces the injectors to stay open.
:nono:
[Modified by 89 Paul in cal, 7:51 PM 3/31/2002]
