JTMmotorsports

We picked up our 2015 A8 yesterday, so naturally we put it on the Dyno!!
We are going to start the modifications today with a set of ARH long tubes w/cats & a tune, so stay tuned for more. The baseline #'s were 408 RWHP & 397 RWT.

We will be making a Twin Turbo Kit for this car in the coming months!!

JTMmotorsports

JTMmotorsports

made another pull after letting the car cool off a bit made 423 RWHP.. graph coming up.. 1 7/8 long tubes ARH headers going on now.. stay tuned

AFVETTE

Interesting, what would be a good "average" stock HP/TQ that is "repeatable" as opposed to a cool motor? Most folks operate their cars and WARM/HOT numbers are more meaningful IMHO.

Thanks for posting.

Tom

ncrowe

Cool motor = more power

need to increase cooling to take advantage of power potential - or run e85

JoesC5

This is why I don't pay any attention to chassis dyno results. They are not performed with a controlled protocol as is an engine dyno test to SAE specs.

Some say don't pay attention to the actual numbers(and that sounds reasonable) but to the increase in HP/torque after any Mods are done.

So, in this example say you do a base line run and get 408 HP and then you install a different air filter element and while you are doing that the engine cools down. Now you do another run and get 423 HP. WOW, now you can claim a 15 HP increase just by changing from the stock factory air breather element to a Fram paper filter(used for illustration purposes only) when in actuality, the change in the air filter element had nothing to do with the power increase..

ncrowe

Good point, especially when seeing a 20 hp difference with a cooler motor on a stock pull. Would love to know the operating temp - these cars run 220 - getting them down to 190 under load would add some hp for sure

JTMmotorsports

All good points, especially about not worrying too much about the "numbers" of dyno results, We try and make it a point to match conditions (as best as possible) after modifications to see the actual pick up of the part being installed. basically just wanted to show an A8 on the dyno and what people should expect as far as results. our first baseline pull it made the 409 and the temps, were around 210° F we let her cool to 180°f when we picked up to 423. BTW The 2015 with the A8 has a 2.73 rear gear with the Z51 option, and 1:1 on the transmission is 6th gear. on a loaded Dyno (like our mustang) its a pretty long pull!!

Translator

Additionally, Mustang dynos usually read 2 to 3% lower than dynojets.

nyls1346

Some updated numbers after ARH 1 7/8 headers and some tuning

ect

406 hp and 397 tq on the first pull to 422hp and 458 tq on the second with out changing anything ! What's with that?

Higgs Boson

why do you think many of us are waiting on a radiator and thermostat?

lots of power with cooler temps......

PeteZ06

That's 2 days later with headers anda tune... It pays to pay attention

shreded1

It says the second pull was after a cool down. There is another graph 2 days later after mods.

ect

Thanks Shreded1.