Audi S4's B5 EDL

[aliencurv]

Anyone know what the B5's EDL (Electronic Differential Lock) does?

[Mikekrus]

Re: Audi S4's B5 EDL

Im not sure about the B5s but i had one in my 93 S4 and it locked up the back diff when you needed more traction. I think it turned off after 30km/p or so..

[The_Jerbel]

Re: Audi S4's B5 EDL

The system is Quattro 4, and uses your ABS sensors to detect wheelspin. When wheel spin is detected, the system applies the ABS brakes to that wheel in order to give resistance to that wheel and transfer torque to the other wheels. It can transfer 67% of the power from front to rear, and 100% of the power from side to side. The system is deactivated above 80kph.

[aliencurv]

Re: Audi S4's B5 EDL

The system is Quattro 4, and uses your ABS sensors to detect wheelspin. When wheel spin is detected, the system applies the ABS brakes to that wheel in order to give resistance to that wheel and transfer torque to the other wheels. It can transfer 67% of the power from front to rear, and 100% of the power from side to side. The system is deactivated above 80kph.

perfect. that makes sense. my dyno run was acting up. if it would have been earlier i would have been able to understand what was going on but it was 1 am and i was exhausted.

each wheel kept stopping and it appeared to as if wheel was nearly taking it's turn at spinning the dyno. so the graph was really messy. the dyno number turned out a little lower then expected but at least i see how to resolve it for next run

[R-Audi]

Re: Audi S4's B5 EDL

The system is Quattro 4, and uses your ABS sensors to detect wheelspin. When wheel spin is detected, the system applies the ABS brakes to that wheel in order to give resistance to that wheel and transfer torque to the other wheels. It can transfer 67% of the power from front to rear, and 100% of the power from side to side. The system is deactivated above 80kph.

I thought this was only with 01+ cars? DJ has an '00 with no ESL.

What numbers did you get? Did Rogers car have the same problems?

[The_Jerbel]

Re: Audi S4's B5 EDL

You're thinking of ESP, rather than the EDL quattro system I described above.

Only '01+ cars have ESP, but ESP is a system that detects that certain wheels are going at a different speed than the others (if you lose traction and start traveling in a non-straight line), so it applies the brakes to the wheels that are traveling faster in order to keep the vehicle going straight down the road. It's fantastic for drivers who don't want to have complete control of the vehicle (they want the car to take care of any problems) and just want to have a safe drive, but not so good for the driver who intentionally wants to kick out the rear end and get the car going in a "non-linear" path

[R-Audi]

Re: Audi S4's B5 EDL

Its easy to take care of though... pull out fuse 42!

[aliencurv]

Re: Audi S4's B5 EDL

yah 42 is out for next pull then

I don't know the exact number but roger was 390 something. mine was 427

[R-Audi]

Re: Audi S4's B5 EDL

You dont have ESL.. so dont worry about pulling fuse 42. Its only on 01+ cars.

Thats interesting that yours came out 37hp higher! Did you do any Lemmi tweaks? Was Meth still disabled? They were done on the same night werent they?

[aliencurv]

Re: Audi S4's B5 EDL

You dont have ESL.. so dont worry about pulling fuse 42. Its only on 01+ cars.

Thats interesting that yours came out 37hp higher! Did you do any Lemmi tweaks? Was Meth still disabled? They were done on the same night werent they?

lemmi winks, boost, intake, and meth. i'm a lot more then 427, but the that edl messed it up. i'll get a real one done now that i know about the edl. cam's butt dyno says near 500 .

blair, what does your butt dyno say?

[Canadian Turbo]

Re: Audi S4's B5 EDL

blair, what does your butt dyno say?

That my neck hurts!

[R-Audi]

Re: Audi S4's B5 EDL

lemmi winks, boost, intake, and meth. i'm a lot more then 427, but the that edl messed it up. i'll get a real one done now that i know about the edl. cam's butt dyno says near 500 .

blair, what does your butt dyno say?

Care to explain a bit more??
New intake? which one? You just add timing and take away fuel with lemmi?

Car sounds like its really coming along! was that 12.2 with those changes??

[The_Jerbel]

Re: Audi S4's B5 EDL

lemmi winks, boost, intake, and meth. i'm a lot more then 427, but the that edl messed it up. i'll get a real one done now that i know about the edl. cam's butt dyno says near 500 .

blair, what does your butt dyno say?

Are you extrapolating to get CHP figures? There's no way you're running 500 at the wheels on K04's...

427 at the wheels is very good for a K04 car...

[aliencurv]

Re: Audi S4's B5 EDL

Are you extrapolating to get CHP figures? There's no way you're running 500 at the wheels on K04's...

427 at the wheels is very good for a K04 car...

it was on the same dyno as rogers and everyone was standing there.

would u like to go for a drive?

[The_Jerbel]

Re: Audi S4's B5 EDL

I'm not calling you a liar. What I'm saying is that 427 is a realistic number for a strong K04 car. 500WHP is just not going to happen on K04'sm, ESPECIALLY at 4000 feet elevation on crappy Calgary gas.

I've been for a drive in your car. In fact, I did some pulls beside your car while I was a few car lengths ahead in my own car