Capital Raceway in Crofton MD.
ESC on or off? I can press it once and its reduced, hold it down and it turns it completely off. Yeah I was just bouncing the revs at the light around 3500-4000 and tried dumping and slipping. Will go back to see if I can’t work on the launches and will see about borrowing a cable as well.
Logging matter at the track or not? Might be easier for me to just log it on the street somewhere.
Don’t forget, the TTRS weighs 700 lbs less, and has a smaller engine and a big turbo. It’s a different animal that likes rpms, and being an RS car probably has a better clutch than the stock S4 clutch to boot.
The s4 if he does that will just spin the tires all day. Or will roast the clutch.
I believe the 6 speed S4 3.0t guys hold rpms in the 3000s similar to us RS4 guys. Don’t slip it at all, just hold at your rpms mark, then swiftly get off the clutch and go full throttle in an instant once you’re ready.
I would try 3500 rpms and adjust by 200 rpm if you’re bogging or spinning (adjust up or down to 3700 or 3300 respectively).
I had my best results from 3700-3800 in my RS4 which makes decent torque. That yielded 1.7-1.8.
Auditude would be good to ask as he has more b8 s4 MT passes than anyone on earth.
As for the car, I won’t sugarcoat it…those results are terrible. Something’s not right. You’re posting ‘stock B8 in 1000 feet of DA’ times.
I turn both off, so hold down for 4-5 seconds… I prefer to sweep the revs vs holding them as it’s easier to time and the car seems to perform better again not an s4… I’d follow what pete(auditude) does since he’s got by far the fastest 6-speed times with the b8… I like logging at the track as you can log into 5th on the dsg so you see lots of data points and don’t risk going to jail… I get everything setup, put the laptop on the passenger seat and hit start right before I stage and then stop/pause it after the pass… Practice a little before going so you get the hang of it… There’s some good posts by Jran and myself on logging… I’d be glad to help additionally if needed and will review them as well if you’d like… Honestly, with stage 2 on pump and in that da you should see traps in the 111-114 range…
Saki, agreed on the rs to s4 comparison… I mentioned Pete as well as he knows better than anyone given the experience…
Tell me about it. I expected slow 60 foot but much higher traps.
You were running on the 93 file? I saw another 2013 GIAC stg 2 get quite a bump on the race file FWIW (something like 13.1@105 to 12.3@112 type jump).
First order would be to log the bypass valve and make sure it’s staying closed. Looks like the timing issue we’ve been seeing.
Yeah 93.
dp looks like you are near DC. If you want to meet up we can try to log both our cars on same road, same conditions to see what they are doing stock vs. GIAC Stage II. That might be an interesting experiment.
I am in Annapolis. I am happy too but do you you have a vag cable? I cant get one until the end of the week.
Yes. I picked up the unlimited vin mobile dongle. Let me double check my cal and I will PM you. I probably have some time either tomorrow or next weekend.
So I emailed AWE this morning and expressed my displeasure with the tune and they told me their performance specialist was going to get in touch with me to discuss the plan.
And why can’t I edit my posts? Also can we make so when we login it takes us back the page we were at instead of the homepage?
Hey everyone. First post here on AR - I’ve been talking with Ron and Mike about this issue and in general performance variations among cars and the reasons… Eventually I want to go Stg2 myself…
Posting here in the hopes that the plots I’ve generated might help the discussion, and I have some questions I’m sure the folks here can answer…
I’ve plotted up data from my stock 2013 S5 on 93, one of Ron’s runs on the 100 program back in oct, Mike’s run, kappax12’s logs, and Skywagon’s data. Everyone except me is stage 2 - but there is a mix of 91/93/100 octane – and I thought the comparisons/contrasts were interesting… At any rate :
http://i616.photobucket.com/albums/tt241/jgreat_bucket/S5/Logs/stock_vs_stg2_5_zpsf5069af2.png
I’m new at this, but things I noticed :
I didn’t plot RFP_AV since it’s closed for all of the S2 cars, and opens up big time on mine (about 20% at 6000 rpm - again no surprise). Also didn’t plot timing pull since it’s sort of usual - blips to -4 or so for most everyone, except Mike- he had -5 to -4 above 5500 rpm.
So - questions for those who know :
The fact that Sky’s and Mikes MAF and timing seem to be very close makes me think they are both performing as expected for these parameters? Mike had more timing pull - likely due to the IAT’s?
The IAT from Ron’s vs. Mike’s runs and the same manifold pressure means he has 7.5% lower density in the combustion chamber (132F vs 180F is 639.6R vs 591.6R so 591/539 = 92.5%). Does that mean he would be down just 7.5% on power if the timing and AFR was identical, or is there more to it than that?
IAT’s … at what point does high IAT mean timing is reduced. Is it a continuous function of the maps or is it just a function of sensing knock? Both? How close are tunes usually to the stated octane - if you have 92 gas on he 93 program is it going to pull timing or is that within the headroom?
At what point does AFR start affecting power output? These cars will dump extra fuel to keep things cool, right? That extra fuel “soaks” up heat and keeps EGT’s down which leads to lower output?
Is the difference in timing between Mike/Sky’s curve and kappax12’s typical for 91 to 93, or is that larger than expected? Is there any way to estimate how much power say 5 deg of timing costs?
Thanks - looking forward to gaining knowledge here on AR…
Jim
Can you change it to just username? No idea who Mike or Ron or Bob are.
The intake air temp map is pretty incredible.
1 yes
2 dunno but I’d guess it’d be more than that. Not only is there less o2 but a good tune will protect the car beyond just a linear calculation of o2 density… So I think all else being equal, the 130 car would still be quicker.
3 depends on the Tuner. If you leave timing to be controlled by actual knock sensors hearing knock, you’re maybe leaving a little bit of safety on the table. JHM tunes a bunch of protection in for example, and IAT is one of the things he has the tune looking out for (among loads of other things). As for 92 on a 93 tune it’s all relative. Branding 93 on a button doesn’t mean it’s great 93 gas…your 92 might be better than Exxon 93 in Vancouver. Hell it can vary station to station not just brand to brand. So to say gas is 92 or 93 doesn’t mean anything unless you test it. Is it 93 because the RON is high? Or the MON? I know which one I’d care about when talking about a performance car tune.
4 haven’t seen it tested to come up with a number.
5 b8 loggers will have to answer that.
Welcome to the site. Neat comparison.
Great comparison, with Giac Stage 2 maps, option are only Pump: 91/93 (1 map for both), Race: 104, and valet.
I waiting for the weather to cool down and I will make another log run to see if any change.
It’s interesting to see how AWE’s smaller pulley generates slightly more boost. My IAT’s were clearly the worst, I wonder if it had to do with the 1.5 hr drive I had just made from Windsor to Ann Arbor and then to Milan.
dunno, but you’ll come with us this fall won’t you? Cayuga or St Thomas.
Not sure, both those places are 3 hr+ from my house according to google. We’ll see but doubtful, Milan is only 20 min away.
aren’t you the guy who went to shannonville? That’s gotta be 5 hrs away. Or maybe I’m mixing you up with boro92
lol I think you’re confusing us, I live in Ann Arbor and have never been to Shannonville…I’ve driven ~3 hr to mid-ohio, but that’s for 2 days on a world-class road course. Furthest I’d go would probably be Road America, but that’s a pretty famous place. Real road courses (the kind that Pirelli WC or Indy drive) are quite a bit more thrilling than simple ones.
Drag racing is fun but I have an automatic, so the only point I see is benchmarking the car, which I can do in my backyard. Don’t get me wrong, fun to meet up with people, but not for 6 hours of driving.