How to adjust pressure regulator on factory external pump

[aaronxs400]

can it be done? is there a regulator that replaces the factor one?

 

[Johnnycheese]

screw and a nut

 

[aaronxs400]

is this on the factory external fuel pump? i dont have the bike here (200miles away)

 

[aaronxs400]

and while im on this...what is the REAL horsepower the factory system can handle? i got search results that said numbers from 230 to 275

 

[B-12]

concerning internal pump

can the pressure also be modified on internal GenI fuel pumps ?

 

[Professor]

concerning internal pump

can the pressure also be modified on internal GenI fuel pumps ?

Yes, you can carefully crush the regulator in a vice to bump the pressure.