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What gains can be seen on 94 octane? im at 255/195 whp/tq stock pulley with full bolt ons (headers, overpipe, downpipe) with the stock catback.
My tuner tells me fuel pump/injectors are not mandatory until 300whp. For some reason i am skeptical i will gain ~50whp with another 3psi
Will HBP pulley exceed this? Hence why its mandatory?
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