Civic-EG.com Forum 3.3.1

- Wed Jul 01, 2009 5:40 am #127260 so i installed my Fuel Pressure Regulator and Fuel Pressure Gauge and tuned it to specs listed in the manual

I have seen an amazing improvement in my car pick up between 1st and 2nd

usually when i slam gears it doesnt burn rubber but now it slips just a little so hear it and it pulls hard

just thought i would share that info with u guys and my car is 92 VX

[suspendedHatch]

- Thu Jul 02, 2009 2:43 pm #127687 If you set it to the stock fuel pressure there should be absolutely no change. It would all be mental.

If you increased the pressure from stock then the ECU will simply use it's O2 feedback setup and reduce the injection firing time (except under WOT when O2 feedback is ignored), resulting in the same amount of fuel being sprayed as before. Which is a good thing, because running richer than stock usually results in a loss of power.

The factory calibration is tuned safely rich under WOT, to the extent that you can gain power by carefully leaning the mixture out. But this is not something you would achieve through reducing fuel pressure, especially w/out a dyno.

- Thu Jul 30, 2009 12:21 am #134153

If you set it to the stock fuel pressure there should be absolutely no change. It would all be mental.

If you increased the pressure from stock then the ECU will simply use it's O2 feedback setup and reduce the injection firing time (except under WOT when O2 feedback is ignored), resulting in the same amount of fuel being sprayed as before. Which is a good thing, because running richer than stock usually results in a loss of power.

The factory calibration is tuned safely rich under WOT, to the extent that you can gain power by carefully leaning the mixture out. But this is not something you would achieve through reducing fuel pressure, especially w/out a dyno.

what should i adjust it to?