2023 8Y 413whp/400lb-tq on a AWD dyno stock

[S3DUDE]

The old say: "put the money where your mouth is"!!.. well, Audi has certainly done it in the power/torque department.

https://www.youtube.com/watch?v=w8PxX0OE4Sc

[Jetdriver]

Yeah, there have been quite a few dyno videos showing the 8y puts down more power than advertised. This is mainly the case with 93+ octane fuel. It seems to be around 380whp with 91. The ECU pulls a lot of timing with less than 93.

[Vegasgolds]

also, this is the European version which is less HP than the American version

[kornsined]

They state early in the video crank horsepower not wheel horsepower.

[TheContrarian]

They state early in the video crank horsepower not wheel horsepower.

Yes I really don't think it's making 413 whp which would be at least 485 crank.

[o1turbo30v]

Crank 8V numbers from APRs site:

Stock As Reported by VAG 394 HP 354 FT-LBS
Stock As Measured by APR 420 HP 372 FT-LBS

[Jetdriver]

The car puts out more than the 401 crank. No 3,600+lb car traps 120mph stock in the 1/4 mile without at least 400whp. which would be about 450-460 crank. Other vids:

https://www.youtube.com/watch?v=8JQnkUcB-tw&t=475s

https://www.youtube.com/watch?v=QPSX7QprEiM

https://www.youtube.com/watch?v=DHX31WwYSZA&t=162s

[fzr100098]

I've seen other videos where it's making over 400 whp on a dyno - it's real

[TheContrarian]

Car & driver had an 11.8 at 117 mph and Motortrend had a 12.1 @ 113.9 mph. I think the best stock dragy time I saw here was 11.7. Sorry guys, I don't think there's anything special going on here.

[Jetdriver]

Most dragy's have been between 117-121. 15% reduction from 401 is 340. Even if we say trap is 117, there is no way a car with 340whp at 3800lb (with driver) is trapping 117mph. This car puts down 375-400+ whp depending on what octane you use and 375-400+ is more than what Audi claims it has at the crank.

[Grakle]

The old say: "put the money where your mouth is"!!.. well, Audi has certainly done it in the power/torque department.

https://www.youtube.com/watch?v=w8PxX0OE4Sc

They're using a dyno that shows crank/brake hp, so it's only +13hp over stock (not bad), but what's impressive is the additional +31 tq.

[Jetdriver]

They're using a dyno that shows crank/brake hp, so it's only +13hp over stock (not bad), but what's impressive is the additional +31 tq.

The question is; how does it calculate crank hp? Every dyno I've known measures wheel hp. How do they know how much mechanical drag is specific to each car? What if the RS3 is underrated and the Benz is not?

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[Grakle]

The question is; how does it calculate crank hp? Every dyno I've known measures wheel hp. How do they know how much mechanical drag is specific to each car? What if the RS3 is underrated and the Benz is not?

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I agree, any time I've put my cars on a dyno it's been either a Mustang or Dynojet that measures WHP (with a pretty big disparity). It seems the BHP dyno's I see on youtube are in UK/Europe, so I'm not sure what the deal is there. Maybe it tries to calculate bhp through mathematical adjustments, but I have no idea. It's a weird thing to me.

[ZTTRS]

its all calibration though right? Anyone see any hardware changes yet

[DrMerl]

Great thing about a dyno is measuring a change on the same dyno, hopefully on the same day. Other than that they are all fluffy numbers when comparing and a general idea. 1/4 mile, trap speed plus weight are the traditional ways to calculate WHP. Likely a bit of maf will give a HP at the duration on 60-130 times too.

Mustang dynos are known as the "heart breakers" as they generally read "lower". Dynojet is the garage queen of dynos, always reads "high" compared to others. Is it water break, inertia, hydraulic, closed room, proper cooling, proper gear, proper calibration, tire pressure, etc., all that funks with the numbers. Along with sketchy operators and guesstimates on drivetrain loss.

Once the engine is in the car it's tough to compare numbers.

[8STTRS]

The question is; how does it calculate crank hp? Every dyno I've known measures wheel hp. How do they know how much mechanical drag is specific to each car? What if the RS3 is underrated and the Benz is not?

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I'm not super sure what they used to calculate that, either. However, Europeans see that as gospel and that's how they rate their components/upgrades. For instance, look at HPerformance. If you take a hard look at their products being sold and the dyno graphs they show, it is all advertised as BHP but, they don't actually convey that. It really brings into perspective their TC800XT, TC870XT, etc., when you consider that their naming convention was intended to reflect how they advertise power figures, which was at the crank. It took several of us really pushing these turbos, along with supporting mods outside of their recommendations to get anywhere near 800whp for the TC800XT. The TC870XT is a whole other conversation that I won't weigh in on at this time.

Now, there are common violators of this practice in Europe, though--BMW. BMW's routinely make as much, if not more horsepower and torque than their BHP rating at the wheels. 605bhp rated car? Likely around 605+whp. That's why they seem so much faster than folks initially assume. It's also why the MKV Supra moves like a car that makes mid-400bhp. It's because it makes like 370-400whp stock, not 382bhp. Are there exceptions to this BMW rule? Sure. But you can essentially count on that being the rule of thumb.

[Mooseman]

Car & driver had an 11.8 at 117 mph and Motortrend had a 12.1 @ 113.9 mph. I think the best stock dragy time I saw here was 11.7. Sorry guys, I don't think there's anything special going on here.

I got 11.5 @ 119.2 mph on my stock 2022 TT RS (on all season tires). Seems to be closer to 450 than 400 based on that.

[GTItoS4]

I think AWE's dynoplots of the 8V and 8Y help illustrate the power and calibration differences between the two generations... same dyno, same fuel (93OCT), different days (but a mustang dyno is very consistent with weather corrections).

8Y put down 405hp to the wheels stock, with a MUCH smoother and flatter torque curve. Audi clearly improved the stock tune and is taking advantage of better fuel with more timing.

8V made 384hp and is a bit of a mess in comparison.

8V:



8Y:

[S3DUDE]

I just ran tonite 11.60 and a few 11.6x and I trapped a few times above 120mph with two being a 120.77 mph and a 120.62 mph



https://www.audizine.com/forum/showt...-RS3-(no-tune)