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Message: <blockquote data-quote="02GT" data-source="post: 474741" data-attributes="member: 9564"><p>Well for christmas I just found out that im getting a professional products 75mm throttle body and plenum to go along with my JLT CAI. Well my question is do I need to tune my car? I know that tuning my car is a great idea, but I want to wait until I get some 3.73 gears to really get my car tuned. A friend of mine said that having those mods will sometimes cause my air-fuel ratio to be off and some other bullshit, i think hes just being a know it all because I have never heard this before, but I just want some confirmation.</p></blockquote><p></p>