It's official...I maxed out the stock fuel pump all motor

Reply Subscribe

Thread Tools

Search this Thread

07-10-2006, 05:01 PM

96sleeper

Supporting Maxima.org Member

Thread Starter

iTrader: (4)

Join Date: Nov 2000

Location: Chattanooga, TN

Posts: 1,756

It's official...I maxed out the stock fuel pump all motor

My problem was described in this thread.

http://forums.maxima.org/showthread.php?t=480283

Thanks for the help everyone. I installed a Walbro tonight, took care of all my problems. The tune looks perfect now.

For future reference, the stock 4th gen fuel pump can handle 260-270whp N/A. (I am not sure exactly where I am at now).

07-10-2006, 05:37 PM

mforrest100

Supporting Maxima.org Member

iTrader: (24)

Join Date: Oct 2002

Posts: 1,898

So can I upgrade to this fuel pump now and be safe for when the 3.5 is making that kind of power or should I wait until the 4th gen istock pump is maxed out. WOuld only like to dyno tune one time.

07-10-2006, 05:42 PM

nismology

Supporting Maxima.org Member

iTrader: (8)

Join Date: Apr 2003

Location: Miami, FL

Posts: 9,116

Glad to hear you got it worked out.

Which walbro did you go with?

07-10-2006, 05:57 PM

96sleeper

Supporting Maxima.org Member

Thread Starter

iTrader: (4)

Join Date: Nov 2000

Location: Chattanooga, TN

Posts: 1,756

I went with the 255lph walbro, just in case I decide to upgrade further.

07-10-2006, 06:01 PM

nismology

Supporting Maxima.org Member

iTrader: (8)

Join Date: Apr 2003

Location: Miami, FL

Posts: 9,116

Low or high pressure? And what's the a/f looking like during closed loop?

07-10-2006, 06:11 PM

DandyMax

3.5 in the works

iTrader: (7)

Join Date: Jun 2004

Location: Ontario, Canada

Posts: 2,477

Kewl... good to know. Glad you got it straightened out. Now get thee to the track man and chase SR and Jime!

07-10-2006, 06:14 PM

96sleeper

Supporting Maxima.org Member

Thread Starter

iTrader: (4)

Join Date: Nov 2000

Location: Chattanooga, TN

Posts: 1,756

Quote:

Originally Posted by nismology

Low or high pressure? And what's the a/f looking like during closed loop?

its the gss342 high pressure. The car has adjusted fine during closed loop, around 14.7:1 same as before.

07-10-2006, 06:42 PM

MaxBlack97

Supporting Maxima.org Member

iTrader: (11)

Join Date: Jan 2006

Posts: 398

What mods exactly do u have to get ur car to 260-270 ?

07-10-2006, 06:58 PM

NmexMAX

dot dot dot ...

iTrader: (22)

Join Date: Dec 2000

Location: Santa Fe, NM

Posts: 34,588

Quote:

Originally Posted by MaxBlack97

What mods exactly do u have to get ur car to 260-270 ?

Here's a good start.

http://forums.maxima.org/showthread.php?t=467517
http://forums.maxima.org/showthread.php?t=462869
http://forums.maxima.org/showthread.php?t=465133

07-11-2006, 09:52 AM

#10

IceY2K1

Fastest Fantasy Maxima Evar

iTrader: (3)

Join Date: Jan 2001

Posts: 16,245

How many miles were on the stock pump?

07-11-2006, 10:46 AM

#11

96sleeper

Supporting Maxima.org Member

Thread Starter

iTrader: (4)

Join Date: Nov 2000

Location: Chattanooga, TN

Posts: 1,756

Quote:

Originally Posted by IceY2K1

How many miles were on the stock pump?

About 50,000 miles ago, my speedometer quit working for a while, maybe 10,000 miles, but my odometer shows 17x,000miles now. So the stock pump lasted maybe 180,000 miles.

it could be old age that killed it, but it seemed to work fine until I made some changes to the car and it just could not keep up. At higher rpms the pressure would start falling.