hey sc300t
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Its an MK3 turbo fuel pump. Higher capacity. Its NOT the MKIV pump, though. The MKIV Supra pump requires a separate Fuel Pump ECU. I think Jeff (SC300turbo) may have more information on this.
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91 supra turbo pump is a drop in....little bending to the sending unit....but no computers needed......as for the 94 tt pump you need the tt fuel computer to control it..... Jeff
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the supra pumps are silent...and good to about 5-600rwhp on the tt pump.....i dont think your gonna need more and if you wire the pump for constant high voltage duty your gonna burn up the electrical system and the fuel pumps.....Jeff
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Well the MKIII turbo fuel pump is only supposed to flow enough fuel for 450rwhp or so right?
What if I want to go beyond that?
First I'm told that the MKIV pump won't work since I need the MKIV fuel computer, but then I'm told it would be an upgrade to do for big power...
Thats why I'm confused
How would I install the MKIV pump without the fuel computer? Does the MKIV computer need to be installed?
What if I want to go beyond that?
First I'm told that the MKIV pump won't work since I need the MKIV fuel computer, but then I'm told it would be an upgrade to do for big power...
Thats why I'm confused
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You dont need the MKIV ECU to run the MKIV pump, we have done a number a dual MKIV pump setups in Supra (running 12v, not the 9v through the ECU), but make sure your wiring is of sufficient gauge to support the amperage draw.
Alternatively, I run the Walbro intank units in my car and am completely satisfied with them.
Now, on another note, when running a fuel system that is capable of flowing over 500rwhp or so in a daily driven car, you run into the problems of over-heating the fuel due to the pump constant recirculating massive amounts of fuel that isnt being used, since you arent under boost but a fraction of the time. This cause the fuel to heat up since the fuel is the cooling medium for the fuel pumps. In turn, your fuel pressure starts to drop as the pumps struggle in the heat.
We are recommending use of a fuel pump controller for these setups. We use a Weldon Dial-a-Flow (~$375) which is a pulse-width modulator rather than a reduced voltage setup like the MKIV fuel ECU, which tends to lower life of the pump.
Alternatively, I run the Walbro intank units in my car and am completely satisfied with them.
Now, on another note, when running a fuel system that is capable of flowing over 500rwhp or so in a daily driven car, you run into the problems of over-heating the fuel due to the pump constant recirculating massive amounts of fuel that isnt being used, since you arent under boost but a fraction of the time. This cause the fuel to heat up since the fuel is the cooling medium for the fuel pumps. In turn, your fuel pressure starts to drop as the pumps struggle in the heat.
We are recommending use of a fuel pump controller for these setups. We use a Weldon Dial-a-Flow (~$375) which is a pulse-width modulator rather than a reduced voltage setup like the MKIV fuel ECU, which tends to lower life of the pump.
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