Is It Worth Upgrading My Fuel Pump?

[BANGN]

hope I posted in correct section,

heres the run down on the details:

R32 - RB20 Silver Top

45V3 turbo

2.5" dump off the turbo i think, looks to turn into 3 or even 3'5 further up the system.. i havent measured it properlly yet

HKS fmic

standard fuel system (pump, reg and inject)

SAFCII

running 13.5 pounds.

is it worth upgrading the stock fuel pump to a 040 item? Im not too familier with what a standard gtst pump can take. It feels a bit lacking power atm, but its getting a good tune tomorrow but wondering if that should be something on my shopping list. not a big fan of buying shit and seeing no difference

Edited August 24, 2007 by YEHBOI

[djr81]

Get a GT-R pump.

[madaz R33]

040 in my opinion-everyone's different

[subzeroR33]

Its always to be safe than sorry i would upgrade. I just installed a Nismo pump for $400. Came with brackets and new seal and will handle any future mods you may want to do down the track.

[BANGN]

so your saying that the standard pump isnt really good enough so I could expect to see an improvment?

[subzeroR33]

so your saying that the standard pump isnt really good enough so I could expect to see an improvment?

Well you dont want it to lean out and go bang. But im not sure if the standard pump is sufficient.

[adam-__-]

Get a new pump just to be safe. These car's are well over 15 years old and you never know when they could stop working. If you're on a tight budget, the GTR pumps should be fine, but they're also 15+ years old. Best to buy the right one straight up.

[heller44]

Since you are getting it tuned tomorrow anyways, check the afr vs rpm graph and see if you are suffering lean out issues.. Your tuner will be able to advise you further.

A gtr pump as djr81 and adam said would be fine for your application, as well as being the cheapest option, just another old pump though.

Walbro would be fine for it as well, as long as it is a genuine.

A bosch 040 would be good, but require more work to fit, as well as costing more.

Test and see what voltage your pump is recieving as well.. My car runs a gtr pump, but on the dyno was showing lean out bad with 220rwkw. Measured the voltage and it was ~10.2 and dropping under load. Wired in a direct feed to a relay switching from the original pump feed. Now sits over 13 volts. Its a lot of difference to how much a pump supplies.

james.

[BANGN]

cool thanks for ya help bud

[BANGN]

i got it on the dyno on sat and it got 155rwhp... and was displaying a fair bit of lean out, we then put the correct settings in afc and gave it a mild tune and it got 220rwhp but it was still leaning out a fair bit so it desperatly needs a new pump. So i have a 040 being installed in a couple weeks and then tuning it properlly and then il get it tuned again so i can up the HP..

[dmr]

i went with 040 rather than a nismo one.. as the nismo ones are typically just brand new gtr pumps

seems to be going fine for me

Edited August 27, 2007 by dmr

[/2on]

Ive heard that the Bosch bumps are quite noisy compared to ones like the Nismo and Tomei pump can anyone with a 040 confirm this cause i also need a new pump but i don't want something thats really noisy where im going to hear it in the cabin....

[Cubes]

I only hear a slight buzz from my intank 044.

When the pump was external it was loudish in the cabin. Internal ftw.

If your fitting the 044 intank of the R32 GTST you have to head down the local pirtek and grab a couple of appropriate fittings and then shove them on the lathe to machine the top fitting down to 5/16" and the bottom to suit the sock. A couple of hose clamps and suitable rubber to secure the pump and your laughing.

R33's.. They fit easy. Much deeper tank.

[BANGN]

tis ok im getn hyperdrive to do it.. i could do it but im lazy plus its only 400 buks inc pump, fitting and tune,

[dmr]

Ive heard that the Bosch bumps are quite noisy compared to ones like the Nismo and Tomei pump can anyone with a 040 confirm this cause i also need a new pump but i don't want something thats really noisy where im going to hear it in the cabin....

i can hear mine outside and in cabin... it's quite noisy