Originally Posted by centerforce99
Your cat should still be ok. However, additives, race fuel and all that Octane Booster Horse Shit can coat your cat and lessen the ability to burn off hydrocarbons. I am not for additives. It you can't install it with tools it doesn't add power. With the exception of NOS. Anyways, I would go with a tune-up first. Your car could probably use it anyways. If that doesn't work, the cat may need to be swapped.
Still takes tools to install nitrous.
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