S5 (RHD) Radium Direct Mount Fuel Regulator install with pics
 

As the title suggests, here is step by step view of the Radium Engineering DMR on a Series 5 Turbo. This was done to allow new injectors as the stock nearly 30yr old 550s really needed replacing.
Ended up going with ID1300 11mm primaries and Bosch Motorsport 1650cc 14mm secondaries.
After getting some detailed dimension information from Radium tech support, I figured that it would just fit under the UIM with some minor clearance work.
I wanted to keep the fuel plumbing simple and neat, so was very keen on this solution. At this stage I'm still using standard fuel hose, I'm not going to E85 anytime soon.
Using a locally supplied fuel rail from RaceWorks. There are several suppliers in Australia selling mostly identical kits. Obviously the length of the secondary rail is pretty critical in this scenario.
I kept the stock primary rail also at this stage because I wanted to keep the fuel pulse dampener. I will use the RaceWorks supplied one with a Radium damper when I upgrade the rest of the fuel system.

Step 1: Clearance the UIM. Only a small amount of material has to be removed. A little more was required after these photos were taken once the fuel rail was at the correct height with the injectors installed.
https://cimg1.ibsrv.net/gimg/www.rx7...d64e98b8e6.jpg


Step 2: Install rail, injectors and regulator.
https://cimg3.ibsrv.net/gimg/www.rx7...a5eefbf768.jpg


Step 3: Reattach all vac lines and injector wiring, primary fuel rail, everything that is under the UIM. Reinstall the UIM. (Yes, the MAP reference hose is not fully on, just a test fit in these photos).
https://cimg8.ibsrv.net/gimg/www.rx7...64243c2097.jpg


Step 4: Reattach all vac/breather lines to throttle body. Plumb the rest of the fuel lines. I included a Bosch Motorsport fuel pressure sensor for the ECU. Slot hole in throttle cable bracket. This allows some tilt adjustment on the bracket to clear the return fuel line coming out the side of the regulator.
https://cimg5.ibsrv.net/gimg/www.rx7...4538f0fdc0.jpg


Step 5: Plug in new injector dead times to your ECU. If you're lucky enough to have VE tuning, plug in new injector sizes and fuel pressure, otherwise adjust your base map. In my case, it's a Haltech PS1000, so adjusted base map. Also moved staging bar so general driving around town does not require staging. Setup engine protection parameters for fuel pressure monitoring. Now I have enough injector flow for a mild turbo upgrade in the future.
https://cimg4.ibsrv.net/gimg/www.rx7...32042faee6.jpg

Hope someone finds this useful.
Cheers.

no gauge on that thing??

seems pointless to install a gauge for one time use. Fuel pressure regulators are a one-time setting, and since he has a pressure sensor and a haltech, he can adjust the pressure from the display and log/monitor from there.