Stock AAN, 400m

[vcosmin]

Hi, i did some test today after finished repairing (suspensions related), and changing oil in my s4 (suspensions related), i have a few questions, the car has 270.000 km, an about 1700kg, with me on board, and half tank on gas.
0-100 kmh was 6.5sec with soft launch at 4000 rpm (i really dont want to stress the clutch, and the first gear to much), and the 400m time was 14.5 sec, but the beltronics gives me about 257 hp, or so, that means i input the wrong cx i think ? the car is not chipped i am sure about it. What would be the correct cx, and the powertrain losses about 30% ? or so ?

[prosty]

14.5 with a S4 is a good time for sure!
6.5 is OK but the final ET is really good. 257 might be right for such a heavy car and that speed. My saab weighed about 1600 kg and did 14.2, had about 240-250 hp

[vcosmin]

How can i tell if my car is chipped? without reaching the ecu ? On Autocheck it shows 2.1 bar on overboost, and Ecu code from Vagcom, seems like the original one.

[Rusty]

If it's anything like the GTech then it give power at the wheels so there's about 20% to add on.

100 in 6.5 and 14.5 400m is really good for an S4, I'd be happy with that in a non chipped S2, I got 60 in 6.4 and 14.7 1/4 with 258bhp at the fly.

[vcosmin]

Exactly, i was thinking that maybe i have a chipped ecu, but i want to be sure

[Rusty]

Only real way to find out is to get it on a rolling road or get a boost gauge on there, standard is 1 bar, chipped is usually 1.3-1.5

[UrS4boy]

How can i tell if my car is chipped? without reaching the ecu ? On Autocheck it shows 2.1 bar on overboost, and Ecu code from Vagcom, seems like the original one.

Only way to know is to open up the ECU and check it:

http://www.s-cars.org/postnuke/modul...rder=0&thold=0 (Note is is for a North American LHD car - similar but different for RHD)

and then

http://chips-ur-s.com/ECU/ECU_Pics.html

[gedu]

My UrS4 managed 6.4sec 0-100km/h, and that's with 290HP on dyno.

[vcosmin]

http://www.youtube.com/watch?v=zIkEVadmG5I

i have inputed the wrong weight from a previous tested car (audi 80 1.6td) - (1080) kg, i only did 3 runs, as in my last try , i slipped the cluth , and there was lot of smell, so i think i will upgraded it and try a full bost launch, and proper clutch usage .

[vcosmin]

After a chip, 1.4 max boost, removing the cats (only the interior) and removing the mesh from MAF (more for response, than power) i made another mesurements, i got 249-250-240hp with 0% drive train loses, and 1900weight - 1740car + 80 me + tank full, and 2 spare tires in trunk. I was curious, how is the drive train lose in a URS4, about 50hp ?

[EspenW]

After a chip, 1.4 max boost, removing the cats (only the interior) and removing the mesh from MAF (more for response, than power) i made another mesurements, i got 249-250-240hp with 0% drive train loses, and 1900weight - 1740car + 80 me + tank full, and 2 spare tires in trunk. I was curious, how is the drive train lose in a URS4, about 50hp ?

Drivetrain loss consists of a static component, a component that is dependent on load and a component that is dependent on rpm.
If it were a fixed amount of say, 50hp, a 45hp engine would not be able to move the S4. Stock AAN's put down approx 175hp on the Mustang dyno. That indicates close to 25% loss at this power level.. The percentage gets smaller with more power, since seal drag, etc is static, and thus percentage wise smaller with increasing power.

[vcosmin]

Update, new ingnition , cold air (-3 C) , hot turbo, winter tires, 13.97 @ 400m, and 5.7 0-100kmh, hope the g tech was working right,

[M_GORDON]

I know that a lot of S4 have around of 250zp.
It´s possible because you have front manifold

PS: don´t have the catas this, you must put one hoses into

[S2-63]

Your times are correct, I think.

My old S4 was special, I didn't change anything on it at all (280000km), and I made the same time as a Sport quattro untill 260km/h and then he coulndn't follow any more.

The Sport quattro was mesured by a french magazine 2 weeks before: 5,3s 0/100km/h and around 25s for 0/1000m