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Tbi Fuel Pressure Regulator Adjustment
Tbi Fuel Pressure Regulator Adjustment. I know how to check the fuel pump psi by putting the gauge on a t fitting on the inlet side of the tbi and turning the key on. Monitor your adjustment with a fuel pressure gauge.
Remove air inlet from throttle body. At 3/4 to wot the computer uses a fixed program for max power. If the regulator is adjusted for over about 15 psi it is way too high and a pressure of 25 or so may have already ruptured the diaphrams in the throttle bodies.
Fuel System Checks Fuel Pressure Is Critical To The Operation Of A Fuel Injection System.
1.) install a fuel pressure gauge before removing the stock fuel pressure regulator and leave it installed until final adjustments are made to the new one. Factory tbi regulators are not adjustable and wear out over time due to weakening internal spring tension which reduces power and mileage. Turning the 5/32 allen setscrew inward (clockwise), increases fuel pressure.
This Plug Must Be Removed By Using A Punch To Drive It Off, It Will Not Give Much Resistance.
In this video i show you the simple steps to adjusting your (fpr) fuel pressure using an adjustable one. This will cause the spring to exert more pressure on the regulator diaphragm and regulate at a higher pressure. I know how to check the fuel pump psi by putting the gauge on a t fitting on the inlet side of the tbi and turning the key on.
The Fuel Pressure From Your Normal Engine And Boost Pumps Will Be Suitable To Use With The Tbi Unit.
To be sure you are tuning your new adjustable fuel pressure regulator for optimal performance at wide open throttle please see the paragraph about tuning at the end of the article. Mount the 2 tbi units. The fuel system is installed, checking the fuel pressure on the inlet side of the terminator x tbi efi is recommended.
Once The Plug Is Removed, The Regulator Can Be Reassembled Just As It Was Before.
Always check to insure that you have the proper fuel pressure. By design, they cannot provide consistent readings as the gauge temperature changes. At 3/4 to wot the computer uses a fixed program for max power.
Adjust Pressure, Then Disconnect From Fuel Lines And Install On Tbi Unit.
This tbi adjustable regulator is needed for stock and modified gm tbi engines. Tbis are usually a tad lean when stock and only get leaner with more modifications. Therefore,since it is not reading the a/f ratio you may need more or less fuel for maximum power.
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