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throttle body question

1924 Views 4 Replies 4 Participants Last post by  ViperRay
What if any effect would increasing throttle body size (68 or 70) have on my car which has K&N's, headers, high flow cats and Borla exhaust? Is increasing throttle body size only useful if you have a blower or ported heads, etc. or can you also increase flow with otherwise stock setup (given the need for A/F remapping)?
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You will lose power. You need serious mods before throttle bodies need to be increased.
i lost 25 pds of torque on a simple bolt on motor with 70 mm throttle bodies. not worth the money until you do more mods.
^^^What they said - there's no gain and potential for loss with bigger TB's on a non-stroker, reletively stock motor.
Thanks for input guys.
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