ITR

iTrader: (1)

Hi ! Anyone have ever installed a Supra TT fuel pump? Is it simple to install? Any help would be appreciated !! Thanks in advance!

BOTTLEFED

iTrader: (1)

from what I remember it is a direct replacement - a little bigger in diameter but no problems

adam c

iTrader: (2)

The supra pump is an exact fit replacement. No modifications needed. Access to the pump is under a plate on the drivers side of the rear hatch area. Everything is pretty straight forward. Just be careful when removing/reinstalling the assembly. Changing the pump once you have the assembly out is easy. The supra pump is exactly the same size as the stock pump.

Goukid2

if you want ive got pics of a install i did. Very Very easy. Took literally about 30 minutes. PM me if you really want them.

rx73rotorj

Its an exact replacement, but does it flow better if it is an exact factory replacement? I was just wondering.

Mahjik

iTrader: (1)

Yes it flows more, but keep in mind that the pressure is controlled by the Fuel Pressure Regulator not necessarily the pump itself. Therefore, with the stock fuel system the upgraded pump won't offer much aside from not dropping possible pressure as you increase boost.

rx73rotorj

Hmm thats good to know.

a3dcadman

iTrader: (1)

Pump is very easy to install requiring no modifications for fitment.

Not totally sure if its because of the pump, but when I installed my Supra pump, my a/f ratios went way rich. I have the stock fpr in my system, stock refurbished injectors, downpipe, catback and modified stock airbox on a street port rebuilt engine.
-chuck

Mahjik

iTrader: (1)

It is possible to have a pump strong enough to overpower the stock FPR. While that can provide more fuel, it's uncontrolled and not a good thing (*if* that happens).

ITR

iTrader: (1)

Hi guys, Many many thanks for your help!

Mahjik, i am going to boost to 0.9 boost on stock fuel system. That's why i was tempted to install a supra fuel pump. Are you saying that i wouldn't help at all?

Mahjik

iTrader: (1)

Now I'm not saying it won't be any help at all. It can help. The stock pump has been shown to drop off a little as the boost increases. Now, the fuel pump rewiring mod people have been doing also help in this situation. However, IMO, its just better to go with an aftermarket fuel pump.

It at least will give you the safety of the pump being able to supply the amount of fuel required for your car. I want to make sure people understand that it's not the same thing as upgrading injectors. This would be more of a safety precaution when everything else on the fuel system is stock.

adam c

iTrader: (2)

The stock fuel pump can safely supply enough fuel for a little over 300 rwhp. If you are not modding your car to produce more than that, the supra pump won't help.

Gohan3rdrift

iTrader: (11)

Unless that stock pump is old.
Our cars are 12-14 years old, you should replace the fuel pump regardless...

adam c

iTrader: (2)

I disagree. It is my experience that fuel pumps work, or don't work, and there is no in-between. A 14 year old pump (that works) should be as good as a new one.

ITR

iTrader: (1)

Thanks Mahjik! As you mentioned, what i had in mind is to make a safer system for my fuel system.

Goukid2

A few people asked for photos so her yah go! I guess the first thing you should do is spray WD-40 on the screws of the Fuel Pump Cover. Let that sit for about 20 minutes and then it should unscrew fairly easy. After that its childs play. The Supra Pump is a Denso pump so literally its a really easy swap. Just remove the old pump and replace with the new along with the new Filter. Really Really easy. Took me maybe 30 minutes.

Fsunoles06

Rewire the stock fuel pump and apply more voltage to it and it should be able to support above 350+ rwhp with ease.

ITR

iTrader: (1)

Thanks Goukid2 for the pics!

Fsunoles06 supplying more voltage to the fuel pump, wouldn't that harm the fuel pump?

Fsunoles06

Might cut down on the pump's overall life a little bit. But its not going to harm it. Plently of people have rewired their stock pumps. There is a thread on it somewhere. Should be able to find it with a search.

Marshall

even moreso with the Supra pump -its an amp hungry monster. You need to feed the pump at least 10 gauge wiring right off of the battery.

Fsunoles06

yep, rewire that bad boy with 10 gauge wiring. The stock pump is more beefy than some give it credit for. It can take the extra voltage. Just wish I knew where the thread was that explained the rewiring procedure. It was a very informitive DIY.

bolo_fd

iTrader: (2)

ya most supra owners just rewire their stock pumps for an upgrade or go with dual setup. but the life of the pump suffers so that kind of defeats the whole point, no?

Fsunoles06

well take your pick, higher voltage to the pump and a smaller lifespan or less voltage and a higher lifespan.

dontlift

No, these fuel pumps were designed to run on 14 volts. The rewiring mod fixes the voltage drop you get on the stock fuel pump wiring, and brings the pump's voltage up to spec.

theorie

iTrader: (31)

anyone know the part number for the supra fuel pump?