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back fire after 37lb ractronics

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Old Jan 17, 2008 | 04:29 PM
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Default back fire after 37lb ractronics

We installed 37lb racetronics injectors and adjusted the flow rate and and the minimum pulse width but the car back fires between shifts and idles rough any ideas?
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Old Jan 18, 2008 | 01:27 PM
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any one!!!
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Old Jan 18, 2008 | 03:56 PM
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Hook up a wideband and see what your afr is. I bet you're running really rich.
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Old Jan 18, 2008 | 04:57 PM
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Dont forget GM fuel pressure is 4bar, were injectors rated at 3bar?
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Old Jan 18, 2008 | 10:24 PM
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Originally Posted by ringram
Dont forget GM fuel pressure is 4bar, were injectors rated at 3bar?
yes we did the correction
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