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What gains to expect

808 Views 2 Replies 2 Participants Last post by  diamondd2
Right now my 00' 5.3 Sierra is completely stock. I am thinking of adding a CIA, Cat Back, electric fan, and a custom 93 octane performance tune.

If the stock setup yields 285 HP and 325 lb-ft at the flywheel, what could I expect at the flywheel with these mods?

Does 325 HP and 375 lb-ft at the flywheel sound realistic with this combo?

Thanks in advance,
1 - 3 of 3 Posts
i think that is possible, especially if you go with a nelson performance tune!!
Actually, I am planning on getting a nelson tune.

BTW, anyone have an estimate on MPG increase with this combo?

1 - 3 of 3 Posts
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