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What Is A Safe Hp Gain For A Chn613 With A E7 427


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Whats a safe spot to increase it to without causing any future damage or horrible fuel loss?

Loaded question there all that is more dependent on who is running the truck than how much you crank it up I would first see if Mack would uprate it to a 460P 480hp program see if that doesn't suit you if not its either shell out for the new blixtion box, or put in some over spec injectors. on a side note Pittsburg Power should be coming out with there box in the near future my 427 does everything I need it to do with ease, but I if I was going to bump it up about a 100hp more I would call it quits

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