S4, A6 Dragstrip Day - Round 2

B8 S4
#21

Thnx, Jspazz. Appreciate the input. Interesting you say that about boost, because Ron mentioned that I’m pushing near 19psi. FWIW, my podi boost gauge never climbs above 15. What would make you think that the gauge has any leaks? Based on your reading of boost, looks like it may be accurate.

I’ll take a look at the intake hose this week. Actually considering ditching the APR and going with the Roc-Euro per Ron’s advice.

Hopefully that requested manifold discrepancy isn’t anything I shld be concerned about. Remember, I’m no engineer - much of this stuff is foreign to me :wink:

#22

If you guys like the roceuro better you shouldn’t post about it on the forums till all your buddies have sold their Apr units lol.

Although on Az most people are too clueless to listen to the fastest people so you’re probably safe.

#23

Thanks Jspazz!

I’ve been wondering how much credit I should give my new intake for the improvement. Before I was running a Roc-Euro style setup but it was aluminum and the piping was wrapped. Best with that was the 12.94 @ 108.90

http://img.photobucket.com/albums/v171/Ynnekdude/WP_000214.jpg

Yesterday, 12.63 @ 108.73 and I was running this:

http://img.photobucket.com/albums/v171/Ynnekdude/SubSpeed_2_zps74e6792e.jpg

http://img.photobucket.com/albums/v171/Ynnekdude/SubSpeed_1_zpsed02dc67.jpg

My traps were essentially the same as my first trip but my 60’ improved. Yesterday I was also on summers vs. winters and the DA was better. However, I was running 93 and not 100 like I did a few weeks ago. Could the intake having colder air available during the initial “launch” be responsible for the improved 60’? I didn’t notice any wheelspin when I was on winters so I don’t think that was the reason for slower 60’s?

Either way, I picked up 3/10ths with lower octane, summer tires on heavier wheels, and a new intake so at least one of those variables provided better times.

#24

Clochner, That is my bad I’m a dolt… Just looked at them again and I was looking at requested boost which has hPa, in the 2200+ range but as J said the actual is much lower… My apologies I should have taken a closer look when sober… lol Times are more impressive now though… Also, like J said the values are usually much closer together…

#25

Ynnek I think your driving/launching improved yesterday, rather than your power. That’s reflected in the trap speeds which are unch.

What was your 60’ on the best run from this weekend vs. Last time?

Did you make up or lose any other time elsewhere?

#26

Ron - thnx for clarifying. So bottom line, my timing is 1 degree lower than would what be expected on a 93 Stage II tune, and the delta between requested v. actual boost is larger than usual.

I think it’s possible that the guys who upgraded my software last month set program 1 for the 91 file. I’ll need to verify this somehow. Or there may be an issue with my intake. I’ll run some more logs. And Jspazz, I’m not sure if my supercharger was ever removed for service - I did have the injectors replaced about two years ago after cylinder misfires . . .

Re Ynnekdude’s 60’ times, I think it’s also worth noting that the track seemed better prepped this time around. I ran the same winter setup, and unlike last time, virtually no wheel spin at the launch (at least for my first several runs). I too had great launches - 1.71xx was my best I think.

#27

His best 60’ was 1.75 vs. 1.87 on his best time last time out. So there’s over a tenth in it right there alone.

Perhaps the intake was helping a bit too since his traps were the same despite adding rotating weight. Although with the DA change it’s tough to tell.

Bottom line is the car is moving OUT! I was at the dragstrip yesterday for an hour to watch a couple of local Audi guys and reality is that of the 50 or so cars that were there, only the proper drag cars could touch them. If you’re running mid 12s @ 110+ there’s very few daily driven cars that are anywhere near you at the strip.

#28

Brandon, I trust J, Pete, or Tsivas more when it comes to the 93 logs since they have seen more of those then I have and there not as useful to me since I run 100-104… Given the conditions I think requested boost was probably appropriate and that there may be an issue with actual boost thus J’s ?'s… Did you have the TSB for the T-stat? If so they took off the blower… I’m not positive there is something wrong so don’t get too worried but it does seem off and you still ran some great times… Do you have Audicare? If so when will the car be at the dealer? Maybe ask them to look it over… My dealer is cool so I actually send the one service guy logs but most dealers will look at you cross eyed if you complain about requested and actual boost, sad but true…

Saki, ain’t that the truth… I am pretty sure I was the 2nd fastest street car at Thompson yesterday, key word being yesterday… There was a 2003 Cobra that ran a slightly better ET and MPH but he had drag radials, bigger blower, ton of other mods and is there all the time so he knows how to make adjustments that most don’t… Another guy was there with the GT500 crew that had a new GT with KB blower, spray(didn’t spray though), and a bunch of other mods… High 12’s at like 120!!! Driver mod anyone…

#29

I love racing the bigger HP cars that can’t run from A to B. It’s pretty hilarious.

The GT500 Mustangs, fancy Camaros etc. seem to always run a fraction of what we would run if we had their dyno sheets. The gap is epic.

Every day the track is at freezing temps, we are begging them to open while nobody else even wants to show up since they know their cars are undriveable in cool temps.

I purchase my cars based on a philosophy that is similar to an hp curve analysis. People look at an A4 big turbo and are impressed by the peak HP, however if you look at the curve, the car sucks for 70% of the rev range…then explodes with a torque hit and power at about 6000 RPM to 7500…then you are back to another gear. I would much rather see a better curve and less peak hp.

If you apply this to purchasing a car, I want a car that can put down 90% of it’s power 90% of the time, all year long, all day long, in almost all conditions. The Audis let us do that. The other RWD guys, even M and AMG, struggle like hell. They can put down 90% of their power about 20% of the time.

#30

Cool - I may send to Tsivas and Pete then to see what they think. I did have the TSB done for T-stat a while back. I’m actually making an appt with my dealer on Saturday for summer tire swap and Audicare service. I’ll ask them to look at it - they’ve been pretty cool with me so far. I’ve been a customer there for over six years with two different Audis.

#31

Hey congrats on the runs guys! Awesome numbers on 93, really pleasantly surprised with the A6 as well… I’m gonna look over the logs now and let you know what i think

#32

Ken, I’ve seen 1/4 mile logs where there is definitely a slow 60’ because the IATs were too high from sucking in the hot air…then gets moving once the car gets in the wind at speed…I fully agree the intake can make a pretty big difference.

Cloch, don’t mean to scare you at all…I’ve never seen a log though where requested vs actual was so far apart though. And I agree with Ron, requested looks right, for the conditions. Email Arin, he’s usually super helpful about these things and has a lot of resources (namely the guys who wrote the tune :-))

#33

Good point, Jspazz. I am planning on doing some more logs. Will def get Arin involved at some point. :slight_smile:

#34

Looks like another A6 3.0T ran the strip on the 20th with a Stasis tune and 100 in the tank. Wish I knew who it was…
http://www.dragtimes.com/Audi-A6-Timeslip-25383.html

1/4 Mile ET: 13.280
1/4 Mile MPH: 107.870
1/8 Mile ET: 8.140
1/8 Mile MPH: 85.020
0-60 Foot ET: 1.830

Don’t those traps and 1/8 numbers seem very good? I wonder if he’s on the APR Stasis or Revo Stasis.

1/4 Mile ET: 12.630
1/4 Mile MPH: 108.730
1/8 Mile ET: 8.130
1/8 Mile MPH: 85.870
0-60 Foot ET: 1.756

#35

Interesting. I’d wager Stasis/APR. And he ran on the same track where Prime set the B8 S4 pump gas record.

Ken - you’ve gotta be the fastest 3.0T A6 out there.

#36

I figure I am but I only know of a handful of A6s that have ever even run the 1/4. I wish more were willing to do it so we could see what is beneficial for this platform. I’m hoping that the A6 3.0T turns into the C5 A6 2.7TT as prices go down on used models. Hopefully more people will pick them up and start modding now that warranties are running out. Maybe more tuners will show interest in developing performance products for the A6 when that time comes.

My warranty is up in June… guess I will have to start modding then?

Any updates on the boost issues? Decide to go with the Roc-Euro yet? I’d say go USP if that heatshield wasn’t such a flimsy POS.

#37

You need to convince Arin to sell you the new supercharger. ;D

Re my boost issues - I had the car at the dealer on Saturday for tire swap and Audicare service.
Asked them to check for supercharger leaks, but they didn’t see any. I still need to find time to make some new logs. Not happy with the small sample I have right now. Roc-euro is definitely on my radar - but I haven’t made the jump…yet. The APR intake really opened up the engine noise, and I’m so happy with it that I’m hesitant to change right now. But I suspect I’ll wind up switching sooner rather than later.

We need to get all of the Chi-town guys for a track day. ZCD, Ryan, Vogz, etc…

#38

I need to convince Arin to give me program switching first… baby steps.

Hopefully the boost issues can be figured out soon. Maybe just the incorrect program?

Agreed on the track day. Looks like GLD has some busy weekends coming up in May unfortunately. We should try to organize something a few weeks in advance and hopefully a decent amount will be able to show.

#39

Try to wake cabracco85 out of hibernation while you’re at it. He has a quick B6

#40

x2, hope all is well with him