OK little update on the Pierburg pump I've got... I rang TTS but they couldn't provide any more information than I've already found on the net and advised I speak to Pierburg direct who I've now emailed.
Looking on their own website there's an e-catalogue you can search through which reveals some interesting points...
The pump I have has got a part number of 7.00468.84.0 which refers to:
This variant lists the Leon
Cupra R 225 version in the online catalogue as a compatible model
If I search for the equivalent pump for an AYP/AQX engine I'm referred to 7.00468.
86.0 which looks to be listed for much lesser powered cars in general (1.0's etc) so you would
think that the pump I have is rated higher.
Now, here's where it gets confusing. If you search for a BAM engine you get listings for the S3, TT 20VT and LCR as you'd expect BUT the S3 and TT are listed as a different pump (fair enough - 4WD) but that matches the ETKA part # of the LCR pump?! (8L0 919 087J)
So...
1) The official LCR ETKA part # is listed as an S3/TT pump in Pierburg's catalog
2) Their version of the LCR pump is the one I have, and this appears to be rated higher than the standard AYP/AQX
It looks as though I may therefore have a 4 bar pump afterall but it's not too clear - I'm hoping Pierburg can confirm when they reply to my email - if not I'll give them a call. Such a ball ache