Built mine with Spectre filter from autozone and 3 inch pvc. took the whole stock intake box out cut pvc to correct length and it actually fits in stock ribbed hose just shimmy/push it past all the ribs(that is the restrictive part) and it will stop before the IAT sensor. See how it fits in your car if you have too cut off some more pvc till you filter and pvc can fit in the new space provided once the airbox is gone. Tighten. now you can hear that whine if gtp or get the quicker throttle from the gt
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