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You do need a tune after long tube headers. My Zo6 with the same mods was pig rich. The fact I picked up an additional 22 hp from the tune didn't hurt either! mine dynoed around 390 Rwhp.
My car ran fine with LT headers without tuning ( I'm not saying that this is a good idea though ). I wouldn't install your headers untill your ready to install the blower. Do everything at one and get one *good* tune.
You do need a tune after long tube headers. My Zo6 with the same mods was pig rich. The fact I picked up an additional 22 hp from the tune didn't hurt either! mine dynoed around 390 Rwhp.
Was that 390 with or without the cats?
I was only able to pick up a couple HP with longtubes and cats, definetly not worth the money for me.
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