Tuner for my Mods?

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I thought JLTs pretty much required a tune after install.

If you haven't tuned since your JLT install, you'll see significant gains from that alone...upwards of 10rwhp, if I remember correctly.

But usually tune gains are pretty good. I say go for it.

P.S. I've heard that Flowmasters rape you for horsepower and torque. Don't quote me on that, that's just what I heard (multiple sources).