has anyone ever attempted to bypass the regulator on the tbi to use an external one...i have thought about trying it...(just for kicks) to see if it can be done..

 

Use a 3/32" to 1/8" thick piece of steel, or 3/16" hard aluminum plate. Cut it in the shape of the casting where the FP can mounts to the TB. Can use the can as a template. Drill the four holes for mounting it. If steel paint it.

Use the original diaphragm (if in good condition) and cut the center out, leaving about a 1/4" wide perimeter. Bolt the plate onto the TB with the diaphragm as a gasket.

Use a bypass style regulator close to the TB on the return line. Several advantages to this setup: can use a monster size fuel pump and still have the regulator bypass the fuel at low loads. Easier access to adjust the fuel pressure. A good bypass regulator will hold a more consistent FP then the OEM one.

RBob.

 

thanks man...i will have more questions for you later...what kind of regulator?do you have a pic

 

why use the regulator on the return line and not the feed line?will that not let the full pressure of the fuel pump to the tbi?where can i get one of those regulators and how would i adapt a guage to it...thanks for your help man.i think i will try that if i can find the parts and the right line adapters...