This is a very powerful pump that Walbro / TI Automotive has developed supporting more than 800 whp. Could this be the pump that retires hobbs switch based double pumpers for the majority of us? Any experiences with it?
Has anybody installed this pump into an evo 8/9 fuel pump housing and does it go in the same way as the Walbro 450? The specs imply it should. Finally, was it really initially developed for the Hellcat?
Just when you think they're done, they've only just begun.
damn nice find! its shorter too which should make for an even easier install. Your still going to need the hobb switch activated harness because there is no way the OEM wires are going to feed this.
Taken from the article I think this sums it up perfectly "Our data shows us that the F90000285 pump flows 8% more than the F90000274 pump, but in order for that to happen, it has to draw 15% more current. So it is essentially the same pump, but using more current to drive the electric motor harder"
So take that for what its worth. Could it replace a double pumper with 2x 400 pumps perhaps? I guess its similiar to when the 400 first came out and people were saying wahoo no more double pumper with 2x 255s. Regardless upgraded wiring will need to be taken into account for sure with this pump for it to flow what it claims it can do on paper.
damn nice find! its shorter too which should make for an even easier install. Your still going to need the hobb switch activated harness because there is no way the OEM wires are going to feed this.
Taken from the article I think this sums it up perfectly "Our data shows us that the F90000285 pump flows 8% more than the F90000274 pump, but in order for that to happen, it has to draw 15% more current. So it is essentially the same pump, but using more current to drive the electric motor harder"
So take that for what its worth. Could it replace a double pumper with 2x 400 pumps perhaps? I guess its similiar to when the 400 first came out and people were saying wahoo no more double pumper with 2x 255s. Regardless upgraded wiring will need to be taken into account for sure with this pump for it to flow what it claims it can do on paper.
Very good info here. I suppose the only way around that is to do the STM relay hardwire kit with low gauge wire. Based on Radium Engineering's research, this is a pump that if you have a walbro 450, and you're just shy of meeting your hp goals, this is the pump to toss in the tank next. There's only so much more flow they can extract from a pump with about the same form factor as it's predecessor.
also... the stock siphon may not take that much return flow...
I see. So there will be a point where even the drilled out siphons will not be enough to handle the return. Someone with CAD software should 3d print a new, larger outlet siphon that handles increased fuel return flow, doesn't ove run the stock FPR, and keeps the siphon effect. If I upgrade my turbo one day, i'll definitely be trying a boost a pump.
I see. So there will be a point where even the drilled out siphons will not be enough to handle the return. Someone with CAD software should 3d print a new, larger outlet siphon that handles increased fuel return flow, doesn't ove run the stock FPR, and keeps the siphon effect. If I upgrade my turbo one day, i'll definitely be trying a boost a pump.
One major issue with the OEM EVO 8-9 fuel pump hanger is the restrictive return port and venturi jet pump. When using aftermarket high-flow fuel pumps, the OEM jet pump becomes too restrictive creating unwanted backpressure in the regulator return line causing excessive fuel rail pressure. The Radium fuel pump hanger includes Radium's own proprietary venturi jet pump with interchangeable orifices to minimize back pressure.
We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
Aug 10, 2018, 12:27 PM
