GIAC stage 2. 6MT. 93 octane about 1/4-3/8 full. 034 tube intake with stock filter. All else stock. 77F. ~500 ft elevation. Run 2 was pretty flat. Run 1 looks like it maybe dropped 10 feet over the pull from Google Earth.
I was pleasantly surprised. Did FATS out of B5 habit.
2013 FYI.
what’s the point?
Well aware of your disdain for FATS. For me, it’s extremely useful for before and after mods, power estimate (Nye’s calculator is quite cool if all inputs are updated correctly), general health, and for comparing to 2.7T logs. I have tons of logs of my old B5 S4 and of others and I have a good feel for how weather impacts these times and performance. I’ll always check it. I feel if you don’t at least look at a similar RPM range each time you log, you’re missing out on good information.
I don’t really care about some dude or tuner that may have cheated and posted faster than real times. How cares? Take out the outliers and it’s a great measure that is much more consistent and reliable than 0-60 or 1/4 times/traps. Yes there are still variables, but fewer and easier to control for them.
Exactly. Kinda pointless. Its good to see the majority of the B8 guys stick to actual testing. Not to say back in the day the old FATS thing wasnt an enjoyable part of B5 entertainment but soon after the FATS times kept getting faster and the actual performance of the cars go slower the FATS test is now more of a sideshow act with a million vairables thats been proven pointless. Its right up there with the buttdyno
OP still great information and the logs are always good data. GIAC is killing it with knocking down all the new records. Get that car to the 1/4 mile and see how it does…
THIS.
I and many RS4 and B67 owners use logs all the time to see how my car is doing, so to be clear I have no disdain for ‘FATS’ or RPM/second as a logging tool. I don’t like the ‘my car is XXX FATS…yours sucks’ world that the B5 slipped into. That’s all. You realise that though so that’s good to see.
No, I was just wondering why you’re using something pertinent to the B5, which you aren’t even logging. You’re logging a B8 S4 3.0T supercharged. The FATS was great for the B5 because using 4200-6500 got you away from the low RPM throttle limiter that some early B5 tunes couldn’t defeat, and moved you up through the RPMs where the car accelerated, but stopping at 6500 was popular because it was before the K03 powered stage 1 and 2 B5s fell off.
The tuned B8 S4 lives from 6500 to redline. It’s also not throttle limited.
So I’m asking simply because it’s a useless test for the B8.
Why not change it to 3000-6900 or something in that software? Is that possible? That would be cool for your personal testing.
4200-6500 is an easy range to log without worrying about letting off too soon. Also, Nye’s ECUxPlot automatically graphs it 
I’ll be doing 4000-7000 in the future (FATS+ as it was called lol) as well, but let off too early this time. I wish I could change the tach colors to move the RED to 7200 as I find the “redline” look of the tach annoying now.
much more relevant range.
comparing to your B5 is less relevant if you’ve got different gearing etc.
Gearing and speed are the same
You kidding around?
Nice, thanks for posting. Any reason you are sticking with the stock filter? I saw a tangible gain changing that out even on Stage 1 (and with the stock accordion tube still in place).
Sorry quickly typed and poorly worded. Been told RPM to MPH is nearly identical in 3rd gear for manual B5 and B8 S4s. Will find and post the references.
I have a filter to install, but based on the performance expectations thread I’m already seeing the air flow of a good open element system… I will log before and after when I get around to changing it.
That’s always possible even though final drive is higher but transmission is lower to offset etc. - however everything also got taller in the B8.5 from what I understand (you have a 2013 right), so not sure you can use the B8 for reference.
Sounds good. I wouldn’t rely on those numbers too closely as your local conditions greatly impact what is ‘normal’ for you. As an example tsivas27 logged 1475 kg/hr on a stock airbox-based intake under extraordinarly ideal conditions. In my case the filter change added about 25 kg/hr (~6whp) and I’m only Stage 1 so hopefully you’ll see an even better gain with your mods.
6MTs were unchanged B8 to B8.5. In any event, I’ll be logging vehicle speed next time and doing my own analysis.
Welcome to the forum! Look forward to more data…
How was the humidity and bp? How much was the car driven before these logs? Did it sit at all prior to the logs? 3-5 degree iat change between runs… Air mass and boost are ok, nothing special… Thanks for sharing…
I didn’t record bp that day. I’d have to get my laptop to check the humidity (I recorded it), but I think it was 55-60%. Drove only about 8 minutes prior to the 1st run and only 2-3 miles before the 2nd run. Hoping to log again this weekend and go back and forth on the same spot of road.