Has anyone ever used the ASM 500 efi throttle body upgrade with the reprogramming of the PCM. Is the dyno HP gains what they say they are. Is it worth money. Are there any other upgrades on the market other than a blowers, ect.
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Has anyone ever used the ASM 500 efi throttle body upgrade with the reprogramming of the PCM. Is the dyno HP gains what they say they are. Is it worth money. Are there any other upgrades on the market other than a blowers, ect.
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