Velocity Adjustable Throttle Booster System from PYSpeed.com $420 Shipped
Ready to shipped right away by Fedex.

Technical Specs
- 4 power profiles selection (MIN, MEDIUM, MAX1, MAX2), adjustable according to different driving needs.
- Optimized throttle characteristics to enable immediate throttle response to the engine in real-time, resulting in faster response.
- Simple ?plug-and-play?, with no modifications.
- Slim and compact design.
- Unit can be powered off during driving, and powered up as needed, anytime.
- Intelligent, self learning feedback algorithm to enable optimized driving throughout the power band.

Available Car Models: (All plug and play)
All BMWs, Mercedes, C,E and S. Audi, A4, A5,A6, A3 and Q7. Porsche, Boxster, Cayenne. VW Beetle, GTIs and Passat.

Detail Install and Review by Chowbox here

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Is this like a sprint booster?

yes, but has an OFF position and 4 alternating levels of signal amplification. One of our members just installed it in his car - link in the OP.

my interest is peaked, no idea where to mount the module.

I'm pretty close to pulling the trigger on this purchase and I think that I would mount it to the underside of the dash just to the right of the steering column. There is a space about 6 inches wide or so.

mebbe u can mount it in the cigarette lighter by removing the tray. That'll make a clean look!

Do it soon, since our whole store has a 8% off customer appreciation promotion currently. =)

how long does this promotion last?

Don't know when our manager will pull it down...... :o

I assume this is the AUGSPECIAL promotion? So sounds like it will go through August. This is a great deal with the $50 off and then the 8%. I wish I had not bought a SB and just installed it this past weekend. It would be a no-brainer. I'm just trying to decide if I went to go the through the process of selling (at a loss i'm sure even though it's been used for 3 days) and uninstall of SB and install of velocity.

Couple questions:
1. I am still under warranty and would need to remove every time I go to the dealer. I don't want to leave sticky areas on my dash from adhesion of 3M tape and then removal and then adhesion and then removal, etc. Any way around this?

2. Also, what would be the best way to hide the wires so they aren't just dangling in the driver's footwell?