Seidelly

Need some advice on a fuel issue I am having.. My current setup is as follows..

ID 2000's
Buschur DP 255's
-8AN Feed
Stock feed line in place of stock return line.
Stock fuel rail
Stock FPR


I have ruled out everything below.

- Fuel pumps both replaced x2 + new filters
- Inline fuel filter
- FPR
- Wideband Sensor

It only occurs after 28PSI; its leaning up towards the end of the pull.

Any ideas?

Seidelly

ridenrunwv

I would say the second pump isn't activating but I doubt a single 255 could flow enough to reach the power level you got to before leaning out.

I'm guessing this is a problem that occurred on a car that was already tuned and running fine not in the process of being tuned?

LetsGetThisDone

iTrader: (1)

Did you add fuel in fuel map?

ridenrunwv

He posted this same question on the general tuning page. Probably should discuss it there now instead of having two separate threads on the same topic

Seidelly

Yes fuel has been added to the map..

LetsGetThisDone

iTrader: (1)

What is the logged IPW and duty cycle?

lude2evo

iTrader: (9)

Second pump not coming on? Shouldn't run out of fuel until 750~ with that setup

3gturbo

iTrader: (4)

Heres your fix $112 **** can those 255's buy a single stealth pump on sale from extreme psi make sure you do the rewire and your good for 780hp with a single pump.

https://www.evolutionm.net/forums/ve...fuel-pump.html

evillancer06

iTrader: (5)

Is the hobbs switch hooked up and the fuse still good?

detroit pistins

iTrader: (102)

+1

Fast_Freddie

iTrader: (50)

Could be a number of things... have you checked fuel pressure during a pull?

evo8426

iTrader: (27)

Isn't this the only advice you give on this forum?

3gturbo

iTrader: (4)

Its alot better advice and way cheaper than

A. your advice so far
and
B. dual hanger, 2 walbros, hobb switch surge tank etc

Being that you evo guys are so cheap Im wondering why you guys dont jump on the new pumps

LetsGetThisDone

iTrader: (1)

Because a 340lph pump won't make 780whp on E85..