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Tech question.. new car running a stumble valve, when I got it the barrel valve was st 22%, I put it back to 14% as per engine sheet and it ran like a pig of the line. Do you need to run the barrel valve a lot richer when using these? Are they worth it or keep it simple and take it out? Sorry, hawk midget engine if that makes a difference. All other settings checked and set as per builders dyno sheet.
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