Need help with lean A/F !
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Old April 26th, 2007, 03:47 PM   #1
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Need help with lean A/F !


Hi

On my 05 Auto Stang with Procharger kit, still getting lean idle, my question … do I need to change the pump or install Ford GT pump or do a return line?
Any suggestions !
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Old April 26th, 2007, 03:52 PM   #2
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if your running a stock pump... change it.
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Old April 26th, 2007, 03:59 PM   #3
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Definately need pumps, I ran the GT500 dual pumps on my procharged 07 GT.

I'd also suggest you get a custom tune done to make sure everything is good across the RPM range, if your getting lean codes at idle, your gonna have big problems on the top end.
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Old April 26th, 2007, 04:49 PM   #4
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are you using the stock procharger tune?
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Old April 27th, 2007, 07:59 AM   #5
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The 39 lb injectors and piggy-back pump that came with the P1SC unit were adequate up to 480 rwhp (dynojet). Beyond that car would run lean at very high rpms. Went to 60 lb injectors and GT500 fuel system. A/F ratio is presently 11.3 at highest rpms.
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Old April 27th, 2007, 10:21 AM   #6
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Originally Posted by forensicsteve
The 39 lb injectors and piggy-back pump that came with the P1SC unit were adequate up to 480 rwhp (dynojet). Beyond that car would run lean at very high rpms. Went to 60 lb injectors and GT500 fuel system. A/F ratio is presently 11.3 at highest rpms.
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Old April 28th, 2007, 01:58 AM   #7
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I found some here http://www.rpmoutlet.com/05gtrip.htm#1
There is the different Fuel Injectors size which one?
And about the GT 40 SUPERCAR Fuel Pumps is this ok ?
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