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I decided to not go with a supercharger kit and go with a new Intake pulley system and header set up from zzp, but can’t seem to find the specs online lol.

just wondering if anyone knows the size for the intake tube, headers and pulley system?
I have the LE5 Ecotec and it’s hard to find the G5 specifically online.
 

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Use Chevy Cobalt, your car year. Body styling stuff will differ, but not car mechanical; engine, suspension, etc.

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Anything from a 2.4L Cobalt will be the same. What is this "pulley system" you are talking about?

One thing to consider with the header is whether or not you have what is called SAI (Secondary Air Injection). If there is a smaller hose connected to the bottom of your airbox, you have SAI. You'll need to have that system deleted from the ECU when you remove your exhaust manifold. If your new header does not have a catalytic converter and O2 sensor, you'll have to delete that from the ECU also.
 
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