Re: Longtube tune question
Fwiw - I ran a jlt with no screen, intake spacer, ported lower, longtubes and o/r x for a while with the stock tune.
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2004 Mach 1 #6956 5spd w/IUP
Eaton swap, longtubes, built 3.73 SRA
452hp/409tq dynojet🏁
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