Now once the actual install/swap of the OEM pump for the Supra TT/denso pump is done is there anything that needs udjusting, tuning, cutting, splicing, modifying...and all that...will it have the same pressure as the OEM pump was...

I have a stock fuel system for now but planning on getting the 1300cc secondaries, and i have a PowerFC, running base mod map for now, but will tune once i get the secondaries in...

Thanks...

 

u should be fine

 

So its basically same as the OEM unit, but with a higher flow rate for reliable top HP gains?

 

Yep just did mine. There is a great thread is you can find it with detailed instructions. Basically just be careful when you pull out the sending unit that you don't bend the fuel float ( I think ) thats the word. Very easy swap.

 

while on this topic. how often do fuel pumps usually need to be replaced?

 

Yeah, i came across 2 threads and write ups on the installation, and it sounds fairly easy, its just that no one mentioned anything about adjusting things or tuning, so thats why i was concerned...see i thought that since all these aftermarket fuel pumps flow more volume, somtheing needed to be adjusted to compensate...either tuning on stock ecu, or PowerFC...i guess its just that simple, like a bolt on mod, once done, same as the OEM, no problems with pressure or anything...nice...

 

Super easy, you shouldnt have a problem.

 

Thanks guys...

 

Bear with me for a moment. This is how electronic fuel injection works:
1. A fuel pump pumps fuel.
2. The regulator controls the pressure of the fuel in the fuel rail by letting extra fuel return to the tank. The regulator lets just the right amount of fuel return to the tank so that a specific pressure is maintained in the rail.
3. The ECU opens the injectors for precise amounts of time, so that the right amount of fuel is delivered for the current conditions. The ECU does not know what the fuel pressure is, BUT the maps it contains depend on a specific amount of injector open time delivering a specific amount of fuel (so, changing the pressure would require new maps).

Installing a pump that flows more than the old pump does not require new maps. The regulator just lets more fuel flow back to the tank to maintain the same pressure that you had with the old pump (under all conditions under which the old pump was able to maintain the regulated pressure, which is 100% of the time for a stock or near stock car).

-Max

 

lol

Thanks...