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SVT Shelby GT500
Vmp power package upgrade 2011 gt500
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<blockquote data-quote="Catmonkey" data-source="post: 16643968" data-attributes="member: 124025"><p>The stock CAI is pretty good on the 2010 up. You don't really need a bigger tube with a M122 supercharger for a tune and a smaller pulley. Even the stock tube can outflow the throttle body by a huge margin. The point of increasing tube diameter is to recalibrate the airflow requirements for the change in signal the sensor interprets as airflow. A bigger tube fools the sensor into thinking it's metering less air due to the decrease in velocity of moving air in a bigger tube. The purpose of the bigger tube is to extend the range of the MAF. Once you step up to a larger supercharger, you will need the bigger tube. </p><p></p><p>If you have the big OEM resonator on your intake, JLT makes a sleeker tube to replace it. Ford Racing had a solution at one time, but it's been out of production for several years. </p><p></p><p>OP, my first mod was a TVS and a the twin 65mm throttle body. I skipped the smaller pulley on the stock supercharger, so I can't comment. I ran the stock CAI for a good while with that set up. I don't think you're leaving any power gain skipping the JLT 123mm CAI. An air box upgrade was more necessary with the older cars. 13-14s came with a TVS. It depends on your ultimate goals for the car, but you can kick the larger tube down the road and still do a tune and pulley with the stock supercharger.</p></blockquote><p></p>
[QUOTE="Catmonkey, post: 16643968, member: 124025"] The stock CAI is pretty good on the 2010 up. You don't really need a bigger tube with a M122 supercharger for a tune and a smaller pulley. Even the stock tube can outflow the throttle body by a huge margin. The point of increasing tube diameter is to recalibrate the airflow requirements for the change in signal the sensor interprets as airflow. A bigger tube fools the sensor into thinking it's metering less air due to the decrease in velocity of moving air in a bigger tube. The purpose of the bigger tube is to extend the range of the MAF. Once you step up to a larger supercharger, you will need the bigger tube. If you have the big OEM resonator on your intake, JLT makes a sleeker tube to replace it. Ford Racing had a solution at one time, but it's been out of production for several years. OP, my first mod was a TVS and a the twin 65mm throttle body. I skipped the smaller pulley on the stock supercharger, so I can't comment. I ran the stock CAI for a good while with that set up. I don't think you're leaving any power gain skipping the JLT 123mm CAI. An air box upgrade was more necessary with the older cars. 13-14s came with a TVS. It depends on your ultimate goals for the car, but you can kick the larger tube down the road and still do a tune and pulley with the stock supercharger. [/QUOTE]
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