B8 S4 headers bank or bust?

Drag strips were built for hosting racing events to make money. Magazines generally don’t test at the strip.

When you consider track prep, it’s not always representative of real-world performance:

http://youtu.be/Se_oofEn-qE

(Tapatalk double post delete)

Come on Jspazz, are you being serious right now? Maybe you’d be a better fit over in QW.

In the domestic world the only thing people care about is the 1/4 mile and acceleration (0-60). Hell they have 1/4mile times established for my Q5, who the hell wants to drag race a mid size SUV grocery getter?

if only it were a diesel

Q5 diesel coming September!

3.0TDI which would be NUTS for torque, but I think for efficiency I’d rather see a 2.0TDI option.

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What haven’t I been serious about? I agree with you too, but dragstrips were made for racing, no doubt, and still that’s the only way they have the money to exist. That douchebag from speed channel has even breathed a lot of new life into drag racing with his dumb-ass pinks show. I’ve seen bracket racing with much less-suited cars than your Q5, nothing wrong with it.

I do both track and straight line and have fun, that was never the argument. I just don’t talk down people and then pussy out and that was what was specifically discussed. Maybe Sak can show where Neal said something disrespectful about those who go to the drag strip and I’ll stand corrected.

(Tapatalk does not agree with my fat thumbs today)

you’d be surprised, EuroTech has a customer that had a q5 2.0t that had about 20-25k in mods put into its from stage 3 to everything else he could fit on there and would actually take it to road courses and track the thing(he tracked solo, no instructor as i think he may actually be an instructor) lol

One of my reasons for getting the 3.2 is so I wouldn’t piss with it!

it’s coming witha 3.0tdi? :smiley: I can get rid of my jeep now lol

I’ve been hunted down by an X5M before and seen a cayenne doing 1:40 laps at Mosport, faster than the S4 or RS4…I’m sure the Q5 would be fine esp hopped up

I don’t believe he has. He hasn’t even been to the road course yet (due family and work duties). AFAIK, he has a good deal of respect for those that do either and/or both.

Not sure if anyone has seen this. Provides some interesting calculations on estimated HP based on drag times and vehicle weight

http://www.wallaceracing.com/Calculators.htm

it’s a bit optimistic iirc

Stock rs4 weighs 3940 and I weigh 245 but was down 80 lbs of fuel

I went 12.75 @ 108.36 and 12.82 @ 109.9

Your HP computed from your vehicle MPH is 392.24 rear wheel HP and 435.83 flywheel HP.

For the tuned B8 S4 it does seem to offer reasonable agreement. If I look at the 1/4 results page on this forum and take the middle of the pack numbers 12.35, 112.5 MPH, and 4000 lbs., it would expect to be around 380-410 AWHP (which is about what APR claims on it’s website). For the same 12.35 it predicts a 60’ of 1.72 s. The better calculator may be the one that uses 1/8 ET and density attitude:

http://www.wallaceracing.com/et-correction-eighth.php

If this is too off topic please let me know. What is the effect of wider wheels and tires on the S4s track handling and 1/4 times - e.g. 275/35/19. I would think that the extra unsprung weight would adversely affect bump and rebound, but the wider contact area would help in corning. Taller tire would mean that 1/4 times should go down due to final gearing change. Any experience in this area would be greatly appreciated.

it’s way off topic, but no biggie. You should start a new thread in the 1/4 mile subsection up at the top of the forum.

To keep it OT. a buddy of mine with an evo is using a taller tire to reduce his 60-130. He now tops out at 130.x so he removed a shift point. Somewhat the same principle applies at the 1/4. Going with a wider tire at a road course would help you stick better but at the 1/4 it may interfere with your 60’. You should have some spin off the line so if you have too much tire youll bog off the line.

Done. Thanks.

http://audirevolution.net/forum/index.php?topic=1849.0

True but you reduce the torque multiplying effect when you do that (go taller)

The three fast rs4s that went 11.3-11.4 @ 125-126 were all running smaller than stock tire height. Jhm and TTS both were bouncing off the rev limiter when they trapped (stock fourth hits 128.5…but they were both like 2% smaller) . JHM’s mph on their quickest et was low (124) because they didn’t shift. When they shifted the trapped nearly 127 but worse et. Same with TTS. AMD ran a 8500 rpm redline (bad choice in my opinion especially when the tune they’re selling with their kit is 8000 and the 8500 is special order only. If that’s the case, why boast about your 1/4 time on non standard tune? ).