• Nov 13, 2009
Heffner Performance Twin Turbo Audi R8 - click above to watch the video

We're starting to see this type of thing more and more. And by "type of thing" we mean dyno teasers, not twin-turbo Audis. Nonetheless, you are staring at the unclothed rump of an Audi R8 with two massive turbochargers sitting on a four-wheel dynometer. And the results are, well, calling them boring to watch would be a polite understatement. However...

The car is by Heffner, and while we find the video a little lacking (you'll see), we must give it up for the soundtrack. Audibly, this is about as good as things get. And what do you get if you let Heffner replumb your R8's engine? How does 536 wheel horsepower on 93 octane sound? Sound like about 640 crank horsepower to us. Watch (or rather, listen to) the video, after the jump. Hat tip to Tony M!

[Source: Heffner Performance]



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    • 1 Second Ago
  • 26 Comments
      • 5 Years Ago
      well, I cannot wait til I get home and can listen to the sounds this thing makes. It looks incredible. On the other hand, the lambo's NA v12 makes 640hp. Minus two cylinders, plus two HUGE turbos, I'd like to see a little bit more power.
        • 5 Years Ago
        Displacement is a lot more important than the number of cylinders for performance. It actually has 4 less cylinders and 2.3l less displacement, and those are not huge turbos. The output is quite good considering it's only a 4.2 l V8. Yes they could get a ton more out but then ur bumping up the cost and significantly decreasing reliability. I think this is a pretty good avg between performance and reliability. I'd say it's an an avg turbo tune and in the future you'll see more aggressive tunes.
        • 5 Years Ago
        Well, if we are assuming that it is the V8 it is more impressive... granted it would still be down on displacement from the bull's v12, I would still be disappointed if the power numbers were from the v10. Anyway, now that I HAVE listened to it, I would be scared the blow-offs would knock some body panels loose or something, it sounds vicious.
      • 5 Years Ago
      I was thinking the whole time "PUT THE PEDAL TO THE METAL DAMNIT!"
      • 5 Years Ago
      I don't care what the dyno numbers are.
      IMO, all that's important is the performance.
      Can the car hold it's own against the zr1 or even the nissan gtr?
      If not, it's the second time they wasted money, first on the purchase of the car, second on the turbo setup.
        • 5 Years Ago
        Completely agreed with MikeofLA.

        Plus the fact that it is BOTH mid-engined and AWD with that kind of power, those looks, and that interior.

        That thing looks fantastic, even without the body panels re-installed.

        A turbo or super-charged V8 R8 with V10 body upgrades (I like the wider slats, scoops, and oval exhaust tips...) would be utterly fantastic.

        Second only to a McLaren MC4-12C, which will probably be lighter all around, and the engine is built for turbocharging, and probably a featherweight little screamer. I'd give up the AWD for that.

        Corvette and GT-R, just by brute force, don't motivate me nearly as much as a fantastic mid-engined car.
      • 5 Years Ago
      It is the V8... It should be just about done here in the next week or so. All the tuning is done and now off to get polished.
      • 5 Years Ago
      Heffner kicks ass, always has.
      And from what I can tell, he won't steal your car. lol
      • 5 Years Ago
      That exhaust has more kinks than a Bill Clinton sex scandal.
      • 5 Years Ago
      I take issue with this statement: "two massive turbochargers" no -- they are not massive.. small to moderate at best. The fab work though, looks TOP notch!
      • 5 Years Ago
      Yes. I'll take two please. One in my R8 & one in the A8.




      Right after I win Lotto.
      • 5 Years Ago
      I think it looks alright with out the back bumper just to show off the turbos..... but then again that is what the glass cover above the engine is for.

      • 5 Years Ago
      Seems like they could get a hell of a lot more horsepower out of that thing than that.
        • 5 Years Ago
        maybe... but they are turbocharing a high compression motor. If they swapped our the internals, lowered the compression, (not sure what they are doing for an intercooler), and did extensive fuel system mods,, then sure... this could be a 1000hp car.
        • 5 Years Ago
        Gumpert has a 800HP version of the Apollo using the Audi 4.2l V8 and more is possible.
      • 5 Years Ago
      Is there anything in this world that sounds better then BOV? I don't think there is.
      • 5 Years Ago
      sound of peace
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