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Message: <blockquote data-quote="AD_EG" data-source="post: 3943373" data-attributes="member: 74396">err bro...i don quite understand this part...cause...if you use a larger TB...you need to use less of the gas pedal,to move your car,due to the bigger size,it takes less throttle opening compared to the old TB to send air into the intake...therefore your car should FEEL as if the car had better response...?the thing is with bigger TB...the performance gains is mostly at full throttle and high end power...using a bigger TB is to improve breathing for your engine...air intake...Like bro HKS mentioned....you don upgrade better TB for fun...Breathing starts with your Air filter -> TB ->Intake->Head->Cams.changing your TB will only benefit you if : 1.Your intake has been port matched to fit your TB or changed to a better flowing intake.Better intake have same/larger openings and better flowing plenums...if your intake opening is smaller than your TB,the air that hits the intake during the breathing process which will cause turbulence which leads to loss of power..2.If your head is port & polished.3.Cams.Even if you dont change your cams,it doesnt mean improving your breathing to your engine wont benefit you at all.....its just that with longer duration cams,the increased of air volume from your TB and intake upgrade will be put to good use and this gives you great performance.Your current TB opening is usually sufficient,to provide sufficient air volume to your head...if your TB is too big,that is not good also ....there must be a balance....if the air volume is TOO much,this affects air VELOCITY...which could lead to a drop in performance...imagine a straw..if you drink using a small straw,you can easily sip your drink...but if you use a SUPER large straw...how much energy do you have to use just to get the drink up?Bigger doesn't always mean better <img src="https://zerotohundred.com/forums/styles/default/xenforo/smilies/biggrin.gif"  class="smilie" loading="lazy" alt=":biggrin:" title="Biggrin    :biggrin:" data-shortname=":biggrin:" />a slightly bigger TB can benefit you... most likely at the expense of losing low end power...i hope this helps.</blockquote>

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