Hennessey Performance Engineering is notorious for tuning the Dodge Viper, but little know they have slowly been branching out to other vehicles. Just recently they added the Corvette Models including the ZR1, the Dodge Challenger, Lexus IS-F, and Audi R8 to their tunable models.

http://www.hennesseyperformance.com/

Yeah, I was over at their site several months ago day dreaming and noticed they were making packages for lot's of stuff. Hennessey builds great cars, but I am more of a Lingenfelter man myself though.

I've been a fan of Hennessey ever since Torquenstein wrecked his Hennessey Venom 650R in Morocco during the 2004 Gumball. He and Alex Roy are seriously my road rally idols.

oddly enough, I'm not that familiar with Hennessey...

They make super-Vipers. Awesome company.

cool, but they do more than "super vipers"

yeah they do Super-Vipers, Super-Lambos, Super-Challengers, Super-Audis... Hennessey does A LOT of stuff... and they do it all extremely well

They also sell a modification for the Veyron 16.4 which suprised the hell outta me

WHOA!!! ive never heard that they have a Bugatti after-market upgrade!!! thats insanity... that car doesnt need (or shouldnt have) ANY more power than it already does...

yea an exhaust system upgrade, here's the link:
Hennessey Performance Engineering - Dyno Sheets and Time Slips Page

I'm guessing that they got a request for a custom exhaust from a Veyron owner and since they already have all the details worked out from that, they figured that they might as well throw it in the catalog.

With the slight hope that one of the other billionaires who can afford to spend a Mil and a half on a rocket ship with wheels will use their car enough to warrant aftermarket upgrades.

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2001 Chevrolet Monte Carlo SS
1993 Mercury Topaz GS coupe (soon to be deceased)

maybe I can afford one if my friend get his record deal