xtyper

Made a few passes at Famoso Raceway at the Team Spankin Time private rental. Weather was pretty good with DA in the 300-1000ft range all day. I ran stock Conti street tires, so traction was a big issue out of the hole. I was very happy with the consistent 128-130mph trap speeds, but obviously ET suffered from poor 60ft's. I will have some proper tires for the next event and hopefully can hit 10's.

Attached are my best couple of passes. Car ran full weight with 95 octane chevron 91 and vp 100 blend.

vdubpower

seems your in need for turbo upgrades

ChrisMclass

Nice times!

I see a .3 dif in times didn't kill that trap speed lol. Some good tires will help that 60' get below the 2's then you could crack the 10's. Great times bro.

xtyper

Why u say that? 130mph trap should be good already for 10.8's with a set of drag radials and hopefully 1.7-1.8 60fts.

mertd93

Your trap is high due to poor traction, spinning tires it looks like. You might trap lower if you hook with a 1.7-8 sixty. But you'll hit tens no prob I think.

xtyper

Actually there was minimal spinning. I learned after the first pass that the only way to get off the line was to just very slowly ease on to throttle with a lot of restraint. With drag radials would have been able to floor it from the start and likely even pick up a mph or two.

I'm confident this car as is has a 10.7 at 131 in it with proper tires and a good launch.

NickE63

definitely a 10 sec car, good job bro, i gotta get mine to the track i think i am good for mid 10's

BenzoBoi

Great runs! Now just get some traction and get those 10's!

mertd93

When is your next track day on dr's? Take some videos if possible. I thought tune only bi turbos go 10.9, with upgraded turbos 10.6-10.7 from what I saw posted. Can't wait to see how it runs on dr's, good luck!

m0v30v3r

Nice trap speed u got there. Congrats
I will be using some race gas next time...cant wait till local tracks open up again

vdubpower

wonder what weistec and ams, are running a quarter in perfect conditions

m0v30v3r

I ran 11.2 at 127.7 with weistec tune but had also installed mbh catted downpipes and did not retune for them...i just got a retune for them and feel the car runs better but tracks are closed for the season so have to wait a while..

vdubpower

is that with the turbo upgrades, thats what i meant with my comment

Faris63

Great times Eric ! With DR 10's is easy but aren't the axles weak on these cars ?

Vic55

Love the trap speeds--- How much more hp are you gaining from the fuel upgrade? I hate that cali std is 91---

I wonder what my SL63 would trap with that tune? I am a little lighter right?

AMS_Performance

We never actually ran it tune only but we did go 10.7 @ 135.7 with a tune/turbos on relatively low boost in summer conditions. We will have to invite a customer out with tune only in the spring

xtyper

Thanks Vic. Not sure how much extra the 95 octane is giving me since I never did a dyno comparison, but my guess is maybe 5-10whp since it's a 91 octane shelf tune and can only dial up parameters minimally.

Actually, your SL63 on the same tune should trap about identically since our curb weights are similar according to mbusa.com (4,048 for 2013 E63 vs 4,068 for 2014 SL63).

xtyper

Thanks Faris! And yes, the stock axles are supposedly the weak spot, so I may just go with Toyo R888's instead of full slicks as a compromise to prevent instant, drivetrain-shocking grip.

xtyper

Thanks for the comments. Next private rental may be as soon as next month. January historically averages the best weather conditions, so if we're lucky enough to run in conditions closer to 0 DA, might be able to squeeze out a 10.6x at 132mph pass. That would assume a low 1.7x 60ft. Pretty amazing what our tune-only cars are capable of!

Vic55

Interesting, I expected the hp/tq to be higher based on the 4 pts octane gain...APR recently tuned the Audi RS7 and here is what they got from the different octane numbers; the 2 octane change (91 to 93) is incredible.

More Dyno Results:
APR Stage 1 91 Octane - Crank Figures | All Wheel Figures | Gain Over Stock
APR Stage 1 93 Octane - Crank Figures | All Wheel Figures | Gain Over Stock
APR Stage 1 91 Octane - Crank Figures | All Wheel Figures | Gain Over Stock

APR Stage I ECU Upgrade Calibration Report

Stock:
553 HP & 516 FT-LBS of Torque - As reported by Audi
582 HP & 563 FT-LBS of Torque - As measured by APR

APR Stage I ECU Upgrade:
645 HP & 656 FT-LBS of Torque +90 HP @ 3,350 RPM & +134 FT-LBS of Torque at 3,400 RPM - 91 Octane
674 HP & 700 FT-LBS of Torque +123 HP @ 6,650 RPM & +179 FT-LBS of Torque at 3,450 RPM - 93 Octane
728 HP & 744 FT-LBS of Torque +162 HP @ 5,350 RPM & +223 FT-LBS of Torque at 3,500 RPM - 100 Octane

Click Below

http://www.audizine.com/forum/showthread.php/572821-APR-is-Pleased-to-Present-the-4-0-TFSI-ECU-Upgrade-for-the-Audi-RS6-and-RS7!!

xtyper

But don't these results reflect separate Stage 1 maps for each octane level? If so, then of course it's more the tuning adjustments for higher octane that are producing the big gains, not the octane alone.

How could simply running 100 octane on a proper 91 octane map produce an extra 83hp?!?! If that's possible, then amazing how much adaptation ECU's are capable of these days. Also begs the question of why we would even need multiple maps for varying octane levels.

Vic55

Oh Im sure the maps are different--- dont our cars adapt well too?? I know with my Turbo Porsche I only had 1 map (91) but would screw with race gas the I could easily tell/feel the gains... maybe the DME's on the Audi and Porsche are more flexible to fuel variants?

cnolke

There's no way for a car to sense the octane of gas outside of watching for knock. Many manufacturers (including Ford with their new EcoBoost truck that advertises more torque if you use higher octane) have a soft series of timing advance maps that some algorithm moves up and down as it senses knock.

That said, you can vary the aggressiveness of the timing "yank" that occurs with the sensation of knock in one or more situations. I'd be slightly cautious about how aggressive tuners push the timing and boost if they dont have an equally aggressive removal.

That said, the ECMs are not going to just add boost and advance until they sense its too much and then back off a little. Each of the maps are specifically retuned, retested, and (I hope) carefully watched under a variety of environments before they advertise them.

Octane produced no gains by itself... in fact higher octane fuel has *less* energy density than lower octane. The car has to take advantage of the octane to make more power from the remaining fuel.

cnolke

It can't.

That said, now-a-days direct injection has made fuel timing important. If the car can carefully adjust the timing of the fuel injection to optimize much higher-than-stock boost flame travel and whatnot, then maybe (maybe) the car can learn in a little extra power (but no way 83).

TopGun32

11.5 is nothing to be sad about.. but 129 is really good for a tune and drop in filters.

I'm very impressed with the RS7 tuning development.. not so much with the S6/S7.. seems like the bigger turbos on the RS cars really make the difference.

I would rather have the DCT on the S6/7 but seems like it not set up to handle that much torque.

E63 S 4 matic or RS6.. its really a tough choice.

Still hate the turbos are mounted on inside the V with Audi and BMW.. I'm not sold on that idea. But 4.0L TT in the RS cars is a incredible engine.