We can give you two good reasons to want these:
1.) At the track, open them up for full flow and an extra 10-15 HP
2.) At a stop light, open them up! Check your local sound ordinances. We can't be responsible for 'disturbing the peace' citations.

This electric dump kit connects to any standard 3 in. collector including all of the following Pypes products regardless of the size of your exhaust system. In flow tests, our standard valve opening performed just as good on 3 inch and even 3.5 inch exhaust systems. Because we only make one valve, we have been able to lower the price without sacrificing quality or longevity!

Fits Part numbers YVX10S, YVX13S, XVX10, XVX10S, XVX13, XVX13S, XVX10F, XVX13F. Wiring and switch is included. Allows you to partially or fully open your exhaust from a switch you can mount anywhere in the car. Perfect for when a quick 10-20 horsepower is needed. Made in USA of CNC machined billet aluminum and a high quality motor. 5 year warranty. Another Pypes exclusive!
Features:

• At The Track Open Them Up For Full Flow And Extra 10-15 HP
• At The Stop Light Open Them Up - Check Local Noise Ordinances
• Includes Wiring And Switch
• CNC Machines Billet Aluminum
• High Quality Motor
• Pipe Style: Y-Pipe
• Material: Billet Aluminum
• Sold As: Kit
• Fits Part numbers YVX10S, YVX13S, XVX10, XVX10S, XVX13, XVX13S, XVX10F, XVX13F