Are you sure you jetted the fuel correctly when you changed to the 150 setting? What was the FP doing when you hit the nitrous? It is a possibility that you may need to jet the fuel up to reach the required level of enrichment.
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-1993 Mustang, 900rwhp 03-04 cobra based 4v swap, full Griggs setup, project underway
-1994 Ranger w/ 427cid windsor (daily beater)
check it out!
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