03/29/24: Update
An argument could definitely be made that this should go in a build thread, but I don't have one, and think it could also be argued that this is related?
I got frustrated that a mere months after spending a lot (to me) of money on the aux' kit I didn't really want to have to use, a new drop-in dual-pump bucket came out from Katech. I made the decision to ditch the DSX Aux' kit because I never liked the fuel pick up, although it was a lot easier to do than drop the tank (and everything else related for the install), and I hated drilling a hole. Also - as expected, and stated in many places, I hated the weeping of fuel around the tank tap. Although I probably wouldn't take advantage of the OEM bucket design, my OCD never liked losing some of that OEM functionality, so I had to do it.
The installation wasn't bad, until reconnecting the hoses in the tank after dropping the new bucket in. I'm still not sure I have everything clocked correctly for the fuel level float to work right (I'll know in a few hours after I get home to fill the tank and see what the gauge says...). But reaching in around the pump module to try to plug everything back in took almost as the same amount of time as it did to drop the exhaust, driveshaft, and tank! It was NO fault of Katech, as the layout of everything is about the same as the OEM module, so I want to make that clear. It made it a little more crowded, but that is all. After finally (like 2-hours) getting everything hooked back up, it was smooth sailing again.
In addition, I decided to abandon the DSX controller, too, because the REFLEX for the PORT INJECTION can PWM-control the aux' pump, too, and I figured I could get a little more money selling an entire aux' pump kit, complete. In addition, I didn't like how hard the pump shocked the fuel system pressure when it came in, and having a THIRD TMAP harness was just a lot. So - I pulled the entire DSX aux' kit out, in full working order, and will be selling it. BUT... I had to add a fuel filter, because I learned the Katech bucket eliminated the OEM filter. I didn't want to spend more $$$ than I had to, so I started searching, but what I found was not a solution I could use. I needed something stealthy. So I put together something that fit the bill.
According to Deatschwerks, their DWFF70 (which is a -10AN in and out) would flow more than enough E85 and have the strength to hold up to high fuel pressure. Their techline said this model didn't fail out to 200-psi (it's rated at less, but it didn't fail at that point), and this one is a 5-micron, dual stage filter, so that should take care of that. Because I was already in the area where the DSX pump was, I figured I'd look there to mount the filter, and it fit like a glove. I had visualized a few versions of how I would mount the filter, hence why I got the really short one, but a longer one would fit fine in the same place. Regardless - after deciding with what version I would go with, I used nutzerts to mount it to the unibody rail, and some -8AN lines and fittings to plumb it into the OEM 3/8" lines. While the fuel filter lines I'm messing with are the only departure from the OEM system, I went -8 in case I got the balls, later, to upgrade the size of the system. But - I used PTFT lines for everything, so E85 won't be an issue.
I haven't gotten a chance to check everything yet. I still have to finish the wiring. I'm a little worried about the fuel level sender working (not tangling the in-tank hoses around it), but I'll find that out soon. You have to add a signal wire from the REFLEX output to a solid state relay (SSD), which I have decided to mount in the trunk. That's wired up to the controller, but I have to finish putting all of that back together under the engine compartment fuse box. What's nice is removing the DSX controller, so that gets rid of a little redundant clutter. As seen in some of the new photos, I accessed an existing grommet in the wheelhouse, in the trunk area. I ran the aux' pump wires and REFLEX signal wire through that grommet since it was there, and sealed it back up. I have to finish terminating the power and ground wires for the SSD, mount the SSD, and secured that harness behind all the trunk trim, on the battery side. Fingers crossed I completed the harness correctly for the REFLEX to control the aux' pump correctly. It was hard to support the silly little diode correctly (I'm certainly no electrician, so don't know of good ways to do this), so I used some back-woods engineering to facilitate that...
So - below are some pictures of the endeavor. Cut me a little slack, as I'm no professional installer or anything, lol. There are a few more details, and a lot of checking to go over, so hopefully I'll know by the end of the weekend of any success or failures. Fingers crossed.
Also - for anyone running REFLEX controllers, they just released an new software upgrade with BOOST CONTROL, INDIVIDUAL CYLINDER PORT FUEL TRIM, and some other goodies. They're all on THPSI's website (https://toohighpsi.com/products/reflex). There's also another TunerPro software update from December, too, in case you're controller needs to be updated. This may be a little off-topic, but I think it's close enough? lol.