Dyno Pulls - B7 S4

Updated the OP with graphs and results pages.

Does anyone know why the graph numbers would show slightly lower numbers than the results page?

here;s a bunch more results at that same dyno (the bottom results ENHANCED STREET PERFORMANCE)

click to enlarge


http://img714.imageshack.us/img714/1566/dynodays.jpg

Well, it took me 364 days but I finally made it back to the dyno after getting tuned. Trying to upload the graphs now, but the results were 311.4whp/286.0wtq, which is +11whp/+15wtq over stock. Pretty much exactly what I was hoping for.

Only change to the car was a JHM tune. Will update with more info later.

good stuff, the date for the original post was confusing me for a bit until i saw the 2012 lol

thats a huge gain for a NA car. But didnt you Dyno 306 stock?

Yea, not bad at all. The 306 run was a spike in the graph, so I consider the 301 to be the baseline. My 2nd and 3rd pulls of todays runs both had spikes as well. That made them read something like 322 & 326 peak, but that’s obviously not a good measure. You see what I mean when I post the graphs.

I guess I shouldn’t be referring to the 301/270 runs as stock, since I did have a full 2.5" exhaust and JHM IM. I should be calling them my baseline.

Here’s the graph’s:


http://i703.photobucket.com/albums/ww39/brett_treacy/brett_s4_results_tuned1.png


http://i703.photobucket.com/albums/ww39/brett_treacy/brett_s4_hp_tq_best_tq.png


http://i703.photobucket.com/albums/ww39/brett_treacy/brett_s4_results_tuned_run2.png


http://i703.photobucket.com/albums/ww39/brett_treacy/brett_s4_hp_tq_best_hp.png


http://i703.photobucket.com/albums/ww39/brett_treacy/brett_s4_results_tuned_run3.png


http://i703.photobucket.com/albums/ww39/brett_treacy/brett_s4_hp_tq_best_hp.png

That AFR after the tune, when compared to stock, is a thing of beauty.

you aren’t kidding…I was like ‘WTF is going on…I didn’t post here today’

BWT as a dyno operater for many years I would say the Peak is your car making 322whp. At 6300rpm on a mustang dyno its hitting the breaks once you cross the 300whp range. This is something all mustang dynos do. not at say 300whp but at a set rpm.

On a dyno you can expierence the car pulling timing for what ever event or the car reacting to rollor break. You can see the car is reacting to something at 6300rpm each time. The car is just revovering from one part of the dyno break tests.

Most dynos you don’t see the spikes as much due to them using a much more agressive smoothing calulation. So if you look at it the 322 is much more on pase with B mercer.

Also keep the trend.
your first pull no tune was 285 then the second was 305 a gain of 20whp
your first pull JHM tune was 311 then the third was 332 a gain of 20whp

Our cars will not make big power first pull due to heat soak. I know after the first few pulls the motor is cooled down from the air going threw the motor and the coolant moving threw. Your results are not different then what you see othere get.

I love the night vision acid trip graphs.

Out of curiosity what does this roughly equate to at the crank? 400?

Guess so. Hard to say. I used to tell people my similarly molded car made 380. I didn’t have the manifold.

Jhm93
Jhm 2.5 catless dps
Fast intentions 2.5 X resonated

Interesting. I really appreciate the input because I have almost no experience with dynos of any type. What your saying does make sense though because the spikes did occur at the same rpm range every time and the car did seem to keep increasing in power after each pull.

I have no idea what you mean by this. ???

I would say so. If you look at what a stock B7 S4 ran on the same dyno, 264whp, and compare that to what Audi claims of 340chp, the drivetrain loss would be about 22.5%. Then applying that same loss to 311whp gets you to about 400chp.

the graphs are dark with bright neon lines, looks trippy.

They’re white with colored lines for me…

white on my screen on Firefox or IE, however on TAPATALK they show up black with blue lines like a stripclub.

http://i375.photobucket.com/albums/oo193/sakimano/Screenshot_2013-04-15-14-15-20_zps54ad25d0.png