Rs4 return valve.

[Kdawg7]

Has anyone who has changed their fuel return valve for the RS4 fuel return valve, noticed a visual difference when swapping parts. I’ve ordered one and cant physically see any difference. I expected to maybe see the ports slightly bigger. Unless the difference is internal..?

 

[Rusty2k]

I would assume it's just the strength of the spring inside that's different

 

[Kdawg7]

from what I’ve read recently online checking both part numbers, (which are almost identical). They both withstand same amount of bar.

 

[Rusty2k]

R8 / 2006 to 2008 RS4 pressure relief valve is 079130757

Mk2 Leon Cupra / Cupra R is 06D130757C

From what I've read before about it the standard one regulates to 130 bar and the RS4 one to 135 / 136 bar (reports vary)

 

[Legojon]

From what I've read before about it the standard one regulates to 130 bar and the RS4 one to 135 / 136 bar (reports vary)

I forget, but it's something like that. It was recommended for 2+ tuned cars because they were hitting 129-131 at peak power and releasing the fuel pressure early. I'm guessing they look the same, I got mine from AKS and they stamp the release pressure on the side of the valves - there's a higher one as well (160 I think) for higher stages.