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If I already have a Full or Mail-in Flash, and add a Walbro 255 fuel pump, do I need a reflash?

April 26, 2017Flash FUEL Mail-In pump reflash walbro

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If I already have a Full or Mail-in Flash, and add a Walbro 255 fuel pump, do I need a reflash?

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A. Yes, we have tested this theory, and have proven that when you add a Walbro 255 fuel pump, it greatly affects your Air to Fuel Ratio, by making your car run richer. Here are some dyno sheets with A/F Ratios on them showing the conditions that adding a Walbro will do, this is why we recommend putting the pump in before the flash.