I know the IX pump out flows the VIII pump-- and that same is true for the X pump over the IX -- I thought someone posted this earlier (AMS?)-- Can the X pump be installed in a IX or VIII? I'm thinking not--Anyone?

 

Just go with a with a walbro 255, there only $95 brand new with the install kit and out flow all the above! Just my 0.02

 

+1

 

Thx-- Here is my issue, I would rather not have the walbro whine.... and pls before you post how it doesnt bother you-- pls don't and lets get back to the question at hand-- will a X pump work in a IX or VIII--. Regards.

 

Supra pumps have been known to work very well without the whine

 

^This.

I'm going to go with a Denso pump at some point in the near future. Not necessarily because of the Walbro whine, but because of the Denso reliability.

 

do the denso parts have a part number for a pump that would SPECIFICALLY work on an evo 8 or 9? cause i like denso too.

 

I think the X fuel pump should go in the VIII/IX housing quite easy. All the pumps are 38mm diameter, but the ten pump is ~0.5" shorter in length. Check out this thread for pix.
I plan to order a "fuel pump bracket", part number: MR571546, and hack the upper horizontal tabs off it so I can slide it up the eight/nine housing the additional 0.5". I'll then secure the fuel pump bracket w/a worm clamp. I just need to find a used OEM X fuel pump for sale, purchase it and try this idea out.

 

my walbro is obnoxious and is fairly new, it whines more than any other ive heard. good luck on trying to get the x pump to fit. is the x pump known to flow more than the 9 pumps?

 

My walbro is SILENT. I don't hear it at all, my GF doesn't even notice it.

 

weird, my gf was the one who pointed it out. you can hear mine whining from 15ft away from the car. im not sure why mine is so friggin loud, it wasnt at first but now it is

 

i just installed a gss 342 walbro 255 in my 8 .it was labled for a x but the 8 and 9's is the same part number ..mine fit ..roadraceengineering.com has a flow chart of fuel pumps..i bought the pump from southcoast mistsubishi..

 

bump for this question.. i DO have a walbro, looking to replace it with something quieter as well. I do recall that the X flows better but probably doesn't fit, and it doesn't flow enough for the power I'm making.

Denso part number?

 

The OEM X pump is Denso part #: 1951-30-7770 according to the pic in that hyperlink. Mitsubishi part #s: MR571546 (8/9 fuel pump bracket) and 1770A127 (10 fuel pump, oddly called "fuel in tank filter kit"). The two OEM parts new cost ~$101 from a discount dealer as of NOV 2010.
The OEM X fuel pump flows 192lph @ 70psi w/14V (25lph > a IX fp), the "WhineBro 255lph" flows 231lph @ 70psi w/14V per the AMS Chewbacca fuel flow chart.

 

my walbro 255 is silent as well...never heard it whine.