All Things Mk5 > Performance Modifications

HPFP Upgrade.

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Dave4597:
Hi, recently got Audi Rs4 HPFP for my Ed30 would this pump support stage 2+ and I can see I would have to change couple bits over from the original pump  (photos attached) has anyone ever done this upgrade before?

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rich83:
That wont fit the TFSI I dont think

pudding:
Probably enough volume as it has to support 8 cylinders, but as above, far easier to just stick some VIS internals in.

ROH ECHT:
Do you have any data or facts that verify the RS4's piston length and stroke match that of ours? Then, I would assume you need the Low Pressure Sensor swapped. And there's the fitment onto the timing chain cover.

I agree, I would also opt for an internal upgrade for the original. So long as its pressure regulator on top is in good condition, it comes with a new piston collar nut, and the piston end cap is not worn.

Dave4597:
I fitted the pump after swapping couple of the bits from the original one. Started the car and weird noise coming from the pump/injectors like a metal sound tapping after a while it went away as I tought maybe it just needed to be bleed and it done it itself. As soon as I got into the car and wanted to go for a test drive it started that noise again. Took the pump off and stuck the original one back in car running smooth again. I think the rs4 has two pumps to make the pressure balanced between the V as one of the pumps wasn't enough for the GTI.
I'm currently looking to get the vis internals and go stage 2+


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