well, note that the sharks were pretty quick to come out as soon as they saw some blood in the water; one non-back-to-back dyno result on a car with improper fueling and an arbitrary fwhp conversion that says it doesn't work is not necessarily grounds for writing off underdrive pulleys, let alone calling out anyone who sells them or chooses to install them. a google search shows multiple instances of non-biased dyno evidence where they do make hp, much more so than folks who have not encountered hp increases. you can call the validity of these other results into question if you like, but would then have to accept that this result has no meaning as well.
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