I was afraid of that… I have been throwing a CEL (off and on) but I assumed it related to the Strat O2 spacers coming loose. When I get home tonight I’ll post the CEL code and do some logging and see whats going on.
Any specific field recommendations for the logging?
well, specifically I’d log ignition timing, and timing retardation on each cylinder just to see if the car is doing anything to protect itself.
As I said above it’s probably not all the time…just when it gets freaked out.
I actually have never run pump with the APR tune, only MS109 when at the track.
We do have 94 octane up here but there is starting to be some discussion whether or not the 92 available in the states is actually a better fuel.
better than Petro Canada 94? Fat chance. That shit’s liquid gold!
US92 seems to suck (WA/OR)
I want to put headers on my Yellow imola B5 S4…right after I put a LSX in it 427 with a snotty cam and a set of twins that would suck start 747 when I launch the car!
We used to have Petro 94 here on the west coast which they discontinued to make way for diesel on the pumps (although i have yet to see that) Now the only station that has 94 is chevron although before both gasoline’s come from the same refinery (with different additives).
With only chevron supplying 94 now it is possible that the quality has dropped. I will say the last time I was in a pinch and had to drop some US 92 (chevron) in the car seem to be a bit smoother although I would have to confirm this with logging.
A known VAG tuning company out in these parts has claimed that on their superflow dyno US 92 puts down better numbers than Canadian 94.
Hmm, my car is tuned for 94 so I’ve always used chevron 94 myself, but I noticed the same thing when using US chevron 92. I wonder if there’s a way to prove it? Like testing the gas itself…
On the other hand, I know that a lot of local cars have put down HUGE dyno numbers on our 94 and run great 1/4 mile times. (BAT 1.8T, tial 605, etc)
Timing would probably be the best way to check whats going on. Would probably need to run a full tank of each and log near the half tank mark so there is some good adaptation beforehand. Just a PITA to actually achieve this. I have also wondered about the Mohawk “94” which is boosted with ethanol. I know of the benefits of running E85 as a race gas but I also know for a DI car there is no way that the Pumps/injectors can keep up (at least on the 2.0TFSI’s pre-TSI).
I would check timing while my ECU is still stock post mechatronics replacement but I would have to order a new Vagcom cable since I was dumb and ordered a microcan only when I was playing around with my MK5.
I do believe in the GVRD we can get the ethanol blended 94. Chevron’s 94 contain’s no ethanol as a comparison.
I would expect to get less efficiency (albeit only slighty) from an ethanol blended fuel.
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Sorry this is getting way off topic hahaha
Edit: after doing a bit of reading I may try the ethanol blended 94 to see if the car runs smoother. hmmmm
Interesting, let me know what you find for ethanol based 94. Lol if I ever get enough spare time to log timing on 2 tanks of gas I will definitely try it.
Ok the thread can go back on topic now 
That’s how saki cheats… PetroCanada 94 race gas lolololol
BAN!!! ;D ;D ;D
careful…those morons will quote you thinking you’re serious that 94 is race gas lol
Greater Vancouver Riot District
wutuuuup… It’s playoff season again… time to get the t-reg kitted
http://www.lltek.com/PRS_bin/prs210_repo_men_movie/2364_D016_00041.jpg
David, Sorry busy day at the office… I haven’t found a “cause” either as my hangups are very random… not sure what causes it… I don’t know that logging the engne will tell what is needed… I bet there is a DSG field that would tell us something… I’ll see if I can figure it out… I would shoot Arin an email and ask him… They did figure out he hanup issue after the pulley tune that a few of us experienced so he could at least probably tell you what to look for… Maybe even email Joel, he doesn’t reply in a timely fashion but seems to always answer my emails… Keep me posted and I’ll go and review the DSG fields after dinner and see if I can come up with something… later Ron
Good suggestion Ron.
I emailed Arin and he said they have seen it before on stock and tuned B8s and based on their logging it related to a drop in boost between the 1-2 shift but never determined the cause. he also said it made the 1-2 shift rough? Not sure I would call my 1-2 shift rough with the hang-up, would you?
Anyways, he asked that I log:
Engine speed, bypass valve, throttle position, and ignition advance (I’ve upgraded the vagcom software do you know the new field numbers?)
If it’s what he thinks it is he said all of the above will drop off right at the 1-2 shift. I will try to do some logging tomorrow and let you know what I come back with.
David
David, driving your car the biggest thing I thought is the shifts are crisp, the clutches uptake harder than mine. Afterwards I realized that the soundtrack from your Strat, 034s and milltek may have contributed to the sensation of harder shifts, but I swore it felt like it popped harder into the next gear than mine.
Our cars have similar (high-ish) mileage, from what I saw.
Arin noted once about the load reduction at 6800, and how that was eliminated in V2, but in any of my logs on V1 or V2 beta (still on that), I haven’t seen a drop in boost, bypass valve, timing due to shifts. But I haven’t logged when it’s hung up 1-2 though, it’s only done that at the drag strip, never on the street. It leads me to believe more and more it’s traction-related, possibly individual wheel slip which is more likely at the strip than the street where you can get immense grip from one tire on the groove, and crappy on the other off-groove.
My car hung up 1-2 for all of my runs when i went stock the first time with the S4. I had spent the day at the road course and the car was REALLY hot. That is a possibility too. One run after a LONG cool-down netted the only clean run, and the fastest time (a 13.49 LOL).
The next time I went 12.26, but the car hopped really badly at the launch every time and shifted at 5000 rpm. Tires were almost bald and hard P-zero hockey pucks, and they again had spent sessions at the circuit prior. There’s video of that somewhere.
Once I started being religious about my staging, I eliminated the problem completely at ATCO and last Friday. Lining up on the same rubber, picking one lane and learning the lane, warming up the tires the same amount…
cayuga left lane for the win
lots of guys think the right lane reads better mph so they go there…like that b5 seems to like the right lane (although his only 11.xx last summer was in the left lane I believe)
I’ve settled on the left lane at Cayuga, familiarity more than anything else. I usually try the right once or twice to make sure I’m not missing out on anything.
There’s a big left-tire dip at half-track in the left, though.
neat. Bumps can make your pull timing