Supra Fuel Pump

[1998gstspyder]

2 Questions:

1. Does anyone know how much the supra fuel pump flow?

2. Is it okay to have a fuel pump flow way more than you ever need? Would it be disadvantage in anyway? Such as gas mileage. For example, a 255+ lph fuel pump for a fairly small turbo that doesnt need it.

I'm going from my t25 to a 16g... I need a fuel pump, some told me to get the supra. I had intially thought of the 190, but my friend said he can get me teh 255 for hte same price. Should i go for the 255? I have no intentions of going more than the 16g w/ supporting mods.

 

[96whgsx]

If you have a AFPR, go for it but it will most likely be overkill. Your gas mileage will suffer if you don't have an AFPR or in some cases, people with rewired supra pumps and AFPRs have trouble with the fuel return line being restrictive, no other side effects that I know of. Also, you can see the flow numbers on RRE's site, I don't know it off hand though.

 

[time4anotherdsm]

i have the 16g, supra pump and some 550's car runs like a champ. gas milage on the other hand....

 

[1998gstspyder]

96whgsx....not to familiar with the AFPR...i got a safc 2, would that be the same? I looked up RRE , didnt have the flow rate for a supra fuel pump

 

[Mackzero]

I remember seeing where it flows slightly more than the "Whinebro" 255 and can supply more fuel at higher pressures also. I believe it will run better at lower pressures too. It is well worth the money and is a quieter operating and more reliable pump than the walbro. Also, an AFPR is an Adjustable fpr. Basically the walbro and the supra pump can "force" more fuel by the stock fpr than you want, this is called OVERRUNNING the fpr. By getting an upgraded adj. fuel pressure regulator like the Aeromotive for example, you can set your base pressure at 43 psi in your case, and you will be able to hold that pressure which helps a lot with tuning the car, as the ecu will not have to play adj. games getting your fueling correct. Hope that made sense.

 

[96whgsx]

Yeah, the SAFF-2 is different from an AFPR. Basically if you were to upgrade the fuel pump to something that is pretty big, the stock FPR can only flow so much fuel to go back into the tank and everything else basically goes through the injectors, causing you to run really rich. If you were to upgrade to an AFPR, it will allow more fuel to be drained to the tank so you won't have to run nearly as rich. Here are the flow specs on the RRE site:
http://www.roadraceengineering.com/fuelpumpflowrates.htm

 

[BlackbirdOfPrey]

I was told the supra pump flows about 260 Lph.