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Stock car, stock regulator,,
Posted by KeithR (more from KeithR) on Tue, 26 Mar 2002 21:00:37
In Reply to: Fuel Pressure Regulators (what fits what), 9000 t driver, Tue, 26 Mar 2002 18:54:14
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If you are not modifying other areas the stock rated FPR will be your best bet. Cold starts can be a problem as the computer is in the "open loop" mode and pulsing the injectors based on what they think the fuel pressure is doing. Higher fuel pressure will make the mixture rich till the O2 sensor comes on. A slight amount of enrichment is not a bad thing, unless; You flood and foul the plugs, or, you can't pass an emmissions check. If you are not leaning out under heavy loads and acceleration, I'd stay with stock. The injector flow rate and pattern is matched to the fuel pressure so higher is not always better.
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