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    • APR's Audi RS7 4.0 TFSI Stage I ECU tune upgrade hits 652 horsepower at all four wheels tune only

      Hot damn! The Audi 4.0 TFSI just flat out continues to impress. APR just finished up their tune for the Audi 4.0 TFSI motor in the RS7. The result? 652 horsepower at all four wheels on 100 octane. A gain of 156 horsepower at the wheels over the 496 wheel horsepower baseline. This puts the 4.0 TFSI ahead of the BMW M S63 V8 and the Mercedes M157 V8 as far as tune only power is concerned despite the 4.0 TFSI having the smallest displacement of the bunch.


      Compare the results APR achieved here with the RS7 to what they hit with the S8 on 100 octane which was 610 wheel horsepower. The 4.0 TFSI clearly gets some changes in RS trim for the RS7 and RS6 although Audi has not specified what those changes are. Regardless, the RS version is able to hit higher tune only numbers.

      That means the lighter RS7 with more power to the wheels should easily eclipse 10.9@126 in the 1/4 mile the Audi S8 was able to hit. Mid 10's at 130+? That sounds well within reason.

      Is the tune worth $3k? Clearly it is for the gains but APR is the only game in town and they sure priced themselves like it. The price will drop once others offer the same gains for less money.

      Take a look at the dynographs and acceleration video below. Things are really heating up in the German twin turbo V8 tuning game.

      91 Octane:


      93 Octane:


      100 Octane:



      This article was originally published in forum thread: APR's Audi RS7 4.0 TFSI Stage I ECU tune upgrade hits 652 horsepower at all four wheels tune only started by Sticky View original post
      Comments 33 Comments
      1. Puerto Rican 335d's Avatar
        Puerto Rican 335d -
        Damn thats awesome congrats APR!!
      1. Sticky's Avatar
        Sticky -
        It's freaking ridiculous!
      1. chrisisnapping's Avatar
        chrisisnapping -
        very impressive. Especially considering APR generally tends to tune on the conservative side of things.

        as of price adjustment, don't hold your breath. APR is not one to lower prices to be competitive.

        still what's $3k for that big of a whp gain on a tune for a car that has a base price of $104k?
      1. Sticky's Avatar
        Sticky -
        That's their thinking, what's $3k for these people? Other tuners will get this code and offer it for less than half.
      1. chrisisnapping's Avatar
        chrisisnapping -
        They will, but i doubt APR will adjust their prices. I mean @eurocharged has a B8 S4 tune out for $700, APR still charges $1299.

        Eurocharged has the Porsche 3.6TT tune for $999, APR's is $3299.

        APR has a huge following in the VAG scene, they use that to their advantage when it comes to pricing.
      1. Sticky's Avatar
        Sticky -
        They also get stuff before anyone else.

        An educated buyer won't overpay though.
      1. leveraged sellout's Avatar
        leveraged sellout -
        They are the Dinan of the VAG world when it comes to price, except you might argue that they're actually worth it. This is crazy, I really wonder what the differences are now between the S and RS versions of this engine. Clearly there's a lot of overhead built into the design. This is unbelievable. Really makes me sad that there's no flash tune for the S63 yet :/
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by leveraged sellout Click here to enlarge
        They are the Dinan of the VAG world when it comes to price, except you might argue that they're actually worth it.
        Very good point.

        Click here to enlarge Originally Posted by leveraged sellout Click here to enlarge
        I really wonder what the differences are now between the S and RS versions of this engine.
        This is something I'd really like to find out. Ugh... might need to do some of my own research. That means a ton of time and effort for one article.
      1. mjmarovi's Avatar
        mjmarovi -
        Impressive! Not just the gains impress me, but anymore I view a tune-only setup as basically the stock potential performance. Intake, tune, exhaust, and fuel, that's something I think any enthusiast purchasing a performance vehicle will do, and seeing numbers like this are just insane, almost wrong a car like that and that size is that fast!
      1. leveraged sellout's Avatar
        leveraged sellout -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Very good point.



        This is something I'd really like to find out. Ugh... might need to do some of my own research. That means a ton of time and effort for one article.
        You'd be our hero forever Click here to enlarge Haha. I remember seeing that Motor Trend dyno'd the S8 and B7 in that one comparison last year, and the S8 put down 479/422 at the wheels, so not too far off power-wise but that's way less torque than this RS 7 put down stock. There's gotta be some interesting things going on here.

        Video: https://www.youtube.com/watch?featur...r6xQJU_4#t=289
      1. Sticky's Avatar
        Sticky -
        I'm wondering if with bolt ons, no cats, a custom dyno tune, E85, you can get this thing into the 700's at the wheels. I mean if so that's just... damn.
      1. mjmarovi's Avatar
        mjmarovi -
        Isn't it possible simply things like exhaust and intake design differ on the RS7 causing this change? I mean % wise these differences could easily make that difference, not familiar enough with the cars to know if these things are different. Also, a small difference could be w/e stock tires are on the RS7 as well. So between a sportier exhaust, intake, tires, that may just do it.
      1. chrisisnapping's Avatar
        chrisisnapping -
        come to think of this, know what's really impressive?

        The stock tiptronic is handling this new power.
      1. fastgti69's Avatar
        fastgti69 -
        Click here to enlarge Originally Posted by chrisisnapping Click here to enlarge
        come to think of this, know what's really impressive?

        The stock tiptronic is handling this new power.
        DSG hasn't had too many problems with holding up torque.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by chrisisnapping Click here to enlarge
        come to think of this, know what's really impressive?

        The stock tiptronic is handling this new power.
        That's likely why they didn't go with the dual clutch.
      1. chrisisnapping's Avatar
        chrisisnapping -
        Click here to enlarge Originally Posted by fastgti69 Click here to enlarge
        DSG hasn't had too many problems with holding up torque.
        tiptronic isn't DSG.
      1. ecpchris's Avatar
        ecpchris -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        This is something I'd really like to find out. Ugh... might need to do some of my own research. That means a ton of time and effort for one article.
        The RS7 has different pistons (slightly lower compression), different rods (beefier), different crank (forged with larger snout), different turbos, different exhaust valves, higher flowing mid and exit exhaust, different transmission, larger cooling lines, larger airbox, additional oil cooler, different cams..... and no launch control.
      1. chrisisnapping's Avatar
        chrisisnapping -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        Very good point.



        This is something I'd really like to find out. Ugh... might need to do some of my own research. That means a ton of time and effort for one article.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by ecpchris Click here to enlarge
        The RS7 has different pistons (slightly lower compression), different rods (beefier), different crank (forged with larger snout), different turbos, different exhaust valves, higher flowing mid and exit exhaust, different transmission, larger cooling lines, larger airbox, additional oil cooler, different cams..... and no launch control.
        How do you know all of this?
      1. ecpchris's Avatar
        ecpchris -
        Click here to enlarge Originally Posted by Sticky Click here to enlarge
        How do you know all of this?
        Wild guess?
        Because I have the fastest s6/s7 in the world (for the immediate future) and want to keep it that way. I did the research to see about upgrading to RS specs so I can make the decision about jumping ship or sticking with what I already have.
        This video is pretty informative and covers some of the differences
        Would make a good home page article. Can I get some rep already?