Fuel Pump have low flow rate, what to replace it with?

[ecudude]

Hi all,

I have driven for the past time with stall/stutter on WOT. After finding a lots of smaller leaks in the braided vacum hoses, and TIP, I finally tested the fuel pump iaw this tread:
http://www.audi-sport.net/vb/a3-s3-...-agu-boost-pressure-problems-please-read.html
(My score on flow was about 200cm3/12,1volt, and 2,5bar with vacum and 3.0 without. Pressure after 10 min around 2bar.)
The flow should have been more like 400cm3(0.4 Litre).....

So I gess my pump is bad and need replacement. My car is a stage 1 chip (If I am to trust the previous owner...).

On ebay there is one pump assy for sale(the whole unit):
FUEL PUMP ELECTRIC AUDI A3 8L 1.6+1.8 1996 ONWARDS | eBay

Or possibly oppgrade (single pump):
BOSCH fuel pump SEAT,SKODA,VW 0986580824 | eBay

Not sure if the latter will fit my car doe

Is it possible to replace just the pump in these sender units?

Question two: what about the fuel lines, those hard plastic ones. They have now 14 years on their back, should I replace them?, and if so, with stock parts, or other?

Thanks for any suggestions or recommendations?

 

[ecudude]

Found this Pierburg pump here:
PIERBURG fuel pump AUDI,SEAT 7.02700.00.0 | eBay


Should fit A3 1999, but a bit pricy...


Also found this state

Most stock VW/Audi fuel pumps flow enough for 200-300HP maximum

@ this web site Fully Enclosed FP34 044 Fuel Surge Tank, FP34 - 034Motorsport | Performance Parts for Audi, Porsche, and Volkswagen

Will this be a fact for my car as well?

So maybe a stock or replacment pump will work ok, even if I in the future will look at a upgrade to K04? (direct bolt on version)

 

[IrishDave]

Either the Bosch pump you have listed there or a walbro DA-31 will be more than sufficient for your needs

 

[ecudude]

Either the Bosch pump you have listed there or a walbro DA-31 will be more than sufficient for your needs

Thanks for the replay irshdave. Will it be mutch hassle to replace my intank stock fuel pump with this walbro pump?
NEW AUDI S3 S4 RS4 RS6 RS8 UPRATED 255 044 FUEL PUMP | eBay

This walbro pump seems to be the sheapest alternative for an upgrade....

 

[ecudude]

Inorder to prevent som heavy modding to the pump unit, or surge problem(if the basket/swirl is omitted). Looks like this 4bar pump will be a direct replacement, at only £35:
Fuel Pump Audi A2 A3 TT Ford Galaxy 2 0i 2 3 2 8i V6 2 8 V6 New | eBay

Dimmensions:
LENGTH 136mm

DIAMETER 50mm

PRESSURE 4bar

Seems it supporting 225 bhp enginges like the TT etc.

Any thougts on this one? I guess it will still be ok to run this pump on a 3bar original fuel regulator....