Most aftermarket fuel systems require you to run at least 1/2 tank of gas at all times, otherwise you risk overheating the pumps or sucking air into the pumps.  We spoke to the Aeromotive rep at the local NHRA race and they told us this is just a matter of fact with aftermarket fuel systems.  He said even with their sumped system they still recommend always keeping 1/2 tank of gas at all times.  This is about the dumbest thing I have ever heard.  I really do not wish to fill up the tank in my car 3 times per week.  So we set out to find a better solution. 

Many of the badass pumps out there are very heat sensitive and also require you to run voltage regulators and other sorts of things.  We weren't interested in wiring in all sorts of stuff and running a noisy pump.  We also didn't want pumps that risked overheating on long trips, this has happened to a friend of ours in his Mustang and it is not fun to stop every 20 minutes to dump fresh gas in the tank to keep the pumps cool.  So we decided on finding a dual Walbro 255lph in line pump setup.  These walbro pumps are cheap, reliable, relatively quiet and they flow a ton!  We looked into piecing together our own kit but figuring out all the fittings we needed and paying for the fittings is a PITA.

We called Mark Luton at MMR to see what they had to offer.  One of their fuel system configurations can be seen here.  Mark promised us that he could set us up with exactly what we wanted:  Reliability, able to run the tank dry safely, and 850 flywheel hp capability.  We were skeptical at first because it seemed too good to be true.  But he assured us that he had quite a few cars running around Socal with this setup making great power and being driven daily down to 1/4 of a tank of gas or less.

After weighing our options we decided to order up the MMR kit.  Based on discussions with Mark we opted for their Sumped tank, -10 from the tank to a Y-block, -8 through the pumps and dual -6 feed lines feeding each fuel rail to an Aeromotive/Paxton regulator and -6 back to the tank.  There are many different ways to option your kit from MMR.  You can do no sump and a pickup, dual pumps feeding a single -8 to the rails, etc, etc.  We already had our Aeromotive rails from a previous purchase and Mark was happy to work around our already purchased rails.  The sumped tank is a result of 5 or 6 revisions by MMR to get the best sump possible.  They get brand new fuel tanks from their supplier then they clean them and then they weld the sump on and paint the tank.  The MMR sump is the lowest point on the tank, thus enabling you to run down to E, which we have proven.  We also used the Aeroquip blue hose and press on fittings which is cheap and won't need to be replaced after a few years like most steel braided line.  It also weighs a bit less than steel braided line.  This hose is NHRA certified, PN FC332, 2003 Rulebook pg.189. Section 1:5

Our entire kit showed up about 15 days later.  You can see the unwrapping of the kit in the pictures below.  We mounted the y-block, filter and pumps to the plastic tank cover.  Then we cut the -6 line to fit, mounted the regulator and ran the return line.  Wiring the fuel pumps was a little tricky because the kit didn't come with a relay.  We called Mark and he told us where to get a relay with dual power feeds from Autozone.  After that it was simple, just a chassis ground and a 10 gauge power wire to each pump off of the relay which is triggered off the stock fuel pump relay wire located behind the trim piece in the hatch area.  We also fused the power wire from the relay to the battery.  We were a little skeptical about the press on fittings, but after putting the first one on we knew this stuff was never going to seperate.  You basically have to cut them off if you ever want to change something.

For the first couple of days driving the car we drove around on about 3 gallons of gas and we have run it down to less than a gallon of gas in the tank and the car ran just like stock. The pumps are actually less noisy than some of the old stock fox body pumps we have heard.  We have also run one road race event and launched hard on slicks and the car never sputtered or anything.
The only other problem we had besides the relay was the small fitting in the fuel pump.  Do not tighten this little sucker down very much at all.  We tried snugging it down lightly and it broke on us and we had to get another one from MMR.

Overall we definitely give this system 5 stars, it was easy to install, fairly priced, and it lives up to its billing.  Dealing with the guys at MMR were also great, no complaints.

Delivery		Layed out with fittings
Mounting pumps

The fitting on the lower pump pointing away from the camera is the one that snapped.