I'm opting (this weeks plan anyway) to run a MK4 R3T pump and sender unit from Rsport, I'll need to measure the resistance on the level arm and swap to the MK3 if required. But I've got pics of both and the top and lower half are fully interchangeable so everything should drop in place with no effort at all.
This will give a high flow pump and iirc 5bar reg - still returnless. I'll use a Torques adaptor on the pump sender to go from push-fit to -6, and a single line all the way to the rail. However just before the rail running an inline Radium Fuel Pressure Damper - which will help keep the rail pressure stable from acting like an FPR by smoothing injector openings which the pulsing can cause oscillations. On the other side of the rail I'll run a pressure sensor and it'll go to my AiM datalogger - so if I suffer any ill effects I'll know about it now, however I still haven't really seen any proper evidence or reasoning that these cars need a return setup. Every modern car runs returnless now and with much higher HP requirements.
That setup should work for a Meg swap tbh. Essentially it's like doing the Walbro 255 in the Clio sender, however grabbing the R3T means no modification or messing around to physically install the pump itself. - No doubt a 255 and some DIY would be cheaper. However the Renault pump pre-filters are designed for the life of the car and we don't need an additional fuel filter, whereas if running a Walbro pump/filter in the sender, you'd probably want an additional 10micron inline fuel filter pre rail.
should have it on this weekend. This evening I wrapped the down pipe ready.
