Quote:
Originally Posted by andrey_gta
i have sec cats out, it is under 10 HP, i feel more gains in low end and the previous owners dyno showed it. as well.
the intake actually add close to 10 hp. mainly because charcoal filter is restrictive in our intakes.
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yeah, secondary cats getting 10hp is HUGE since the primary cats are the truly restrictive ones
i want to see what it's like with headers AND sec cats removed with a full cat-back.