Car leaning up at end of pull.. Not sure why. Need advice

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Apr 3, 2016 | 03:47 PM

Seidelly

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Joined: Jan 2014

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From: 18066

Car leaning up at end of pull.. Not sure why. Need advice

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?

Apr 3, 2016 | 03:49 PM

Seidelly

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Joined: Jan 2014

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From: 18066

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Apr 3, 2016 | 03:49 PM

ridenrunwv

Evolving Member

Joined: Oct 2007

Posts: 491

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From: Charleston, WV

Just posted in your dyno thread. Are you currently tuning this car or was it running correctly and then this started occurring?

Seems like you're only running one pump but I don't think one 255 could keep you the AFR you have as long as you kept it before leaning out.

Apr 4, 2016 | 10:26 AM

Seidelly

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Joined: Jan 2014

Posts: 32

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From: 18066

Currently tuning the car; none of the fuel system was installed prior to saturday.
That did cross my mind but its not possible that I would be making this much power & holding 11~ afr .

If boost is lowered to 28PSI or so, the problem reduces itself greatly.
Its obvious its not getting enough fuel but I dont know why. Everything has been replaced.