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?

 

 

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?

 

Did you add fuel in fuel map?

 

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

 

Yes fuel has been added to the map..

 

What is the logged IPW and duty cycle?

 

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

 

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

 

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

 

+1

 

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

 

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

 

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

 

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