Yes, I'm afraid you lost $20, but I hope it at least enhanced your eBay feedback score.

But are you familiar with IPD?
www.ipdusa.com

I don't know how addicted you've become -- all addictions cost something -- but if it's a serious addiction, IPD offers some options that can actually increase your engine's output.
I'm not a specialist in your 850 model, but among various models they offer such things as:
- reprogrammed ECUs and turbo waste-gate controls. For some cars, they have a new kit with which you can download a new software package right into your engine at home, without having to send the chip out for an exchange.
- increased size or less restrictive exhaust systems.
- etc.
And they also offer upgrades to your suspension, brakes, etc., as well in order to make better use of your increased horsepower/torque.

Of course, this will cost you more than $20, I'm afraid. But aside from their prices, at least you'll be able to trust that they'll deliver as promised.