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Most street kits come with everything you need, If you are staying in the 6-8psi area. Depending on the car in question, most parts/modifications needed have to do with the fuel systems(map sensor/ injectiors and/or a fuel pump). Most new stock car internals can handle 6-10psi. Compression ratio and fuel octane rating to prevent detonation are the factors controlling if you can run 6 or 10psi.

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12y ago

What else can I help you with?