BK63amg

Hey guys,
Tomorrow night I'll be running 1/4s at Englishtown. This is going to be my first time on a legit drag strip and I was hoping I could get some pointers on how to properly launch this car.

Should I have TCS in sport or off?

Should I have the trans in S or M?

What RPM should I launch at?

Thanks in advance.

dodger63

What tires

BK63amg

stock pirelli p zeros

dodger63

It'll be challenging to get it off solid. I would do a few runs in s mode traction off. Get a feel for it u can load the converter a bit but really won't be able to mash the peddel to the floor.. Just don't be nervous everyone had a first time.. And everyone has done f'ed up stupid things.. Get down the track safe

BK63amg

OK cool thanks for the advice. Can I trust that S mode will redline every shift?

dodger63

There is talk about reseting the ecu by unhooking the battery for a while.. I just like to beat the snot out of it the day of the track make sure you hold it down allot.. As long as you get 5-6 runs itll be fine.. Try m mode it gets up there quick but it never hurts to try.. With all the things going threw your head then shifting it's a bit overwellming at first

propain

ugh... Street tires...

M mode 100%

Slow roll out with more and more pedal avoiding the tires breaking loose as much as possible. Soon as you hit about 5K RPM you should hammer full throttle and shift at 6K RPM. Shift to 2nd and keep her straight.. Sport mode first. Then for full off after you get used to it.

The track prep and the warm day will help those Pzero's stick though.

Good luck and have fun. Its a private rental you will get way more than 6 runs. Beat the **** out of it on the way to the track. Get there early and let it cool down. Bring lots of ice.

BK63amg

So when I launch, i should launch with the rpms at zero?

propain

Yes, without Drag Radials you will just spin if you do anything else. Your going to have to ease it out of the hole.

Check out this video.. It will give you a little sneak peak to what it looks and feels like..

http://www.youtube.com/watch?v=EI9nO...el_video_title

wadgras44

The masters have already weighed in, so here's the newb approach.

- TCS off for the burn out
- Then switch to TCS sport for when you run (your tail can get a little lively with street tires and heavy foot - and sport will keep you in the safe zone)
- Set your transmission to Sport and paddle down to S1 (the car will determine the optimal shift point - but will hold the gear until redline, whereas in pure manual mode the limiter can creep up on you very quickly)

BK63amg

thanks guys! i appreciate the pointers...hopefully i wont embarrass myself out there today with horrid times but im using this as more of a learning opportunity...riding out with best friend and cousins (C6 Grand Sport and 2012 GT-R) so we'll be putting down a lot of power.

bushburninc63

How many runs does it take for the ecu/tcu to reach it maximum potential? I went to the track once, but only had 3 runs and it was decent. I felt the car had more power left in it. On my way to the track I was just cruising and my car is a daily driver so I drive mostly in traffic.

propain

Good points. You could try in S1 as well. In my experience it helps to short shift 1st gear when on streets. In S1 it wont short shift unless you tell it to and then its slow to act anyhow.

Just try out all sorts of different methods and have fun. Its a learning expereince. Its going to be 85 degress and high humidity. No one will be setting any records thats for sure.

PetroC63

5 or 6 hot lap runs usually do the trick.

Englishtown blows because the most runs I ever made at a Test-N-Tune
event was 4. Normally, you will only get 3 which is why you need to beat
the snot out of the car on the way there.

BK63amg

Test and Tune kicks off at 5pm...what time should I plan to get there? does it get crowded?

PetroC63

Just have fun and try to feather the throttle before you mash
it to minimize wheel spin.

Keep us posted!

dodger63

You guys should come to Englishtown on the 11th we have the track for 5 hr private rental, as many runs as you can do this and I will be there and hopefully petro.. $200 a car includes dinner! It'll be fun

propain

Ohhhh.. I thought it was this weekend.. I thought this guy was going to this one.

Test and Tune? Ick.. hate them. Test and tune on street tires... You couldnt pay me enough.. lol

bushburninc63

Thanks for the info, I figured since my avg was 110mph I know the car can go 113 mph and up stock. I will know next time.

dodger63

No. It's the 11th yea test and tunes blow wait around all day for 3-4 runs rentals are were it's at non stop action the only way u can really get a feel for this car is back to back to back runs

PetroC63

This is a 100% true.

3 or 4 runs will not give you the most accurate assessment
of what your vehicle is truely capable of. Not enough WOT
runs for the ecu to properly adapt.

BK63amg

ok guys - so last night was a lot of fun. Launching the car was a tricky process, I kept ESP OFF and tried S auto, S manual and full M mode to similar results. I don't really understand why my trap speeds vary but my ETs are all so close. When I shifted manually, my trap speeds were always higher - why? Also, how do I correct this times? (I don't understand the formula)

Thanks for all your help in advance. I'm not sure if i should be happy with these times or not, I thought our cars were much quicker in stock form.

I will post pics of my slips when I can but here are the stats from last night:

#1
SETTINGS: ESP OFF/S MODE AUTO SHIFT
8:12pm
Temp: 80
Relative Humidity: 51
Absolute Baro: 2972
R/T - .683
60' - 2.014
330 - 5.521
1/8 - 8.390
MPH - 87.33
1000 - 10.840
ET - 12.911
Trap - 106.67

#2
SETTINGS: ESP OFF/S MODE MANUAL SHIFT
8:44pm
Temp: 79
Relative Humidity: 56
Absolute Baro: 2965
R/T - .251
60' - 2.067
330 - 5.590
1/8 - 8.464
MPH - 87.29
1000 - 10.920
ET - 12.997
Trap - 106.39

#3
SETTINGS: ESP OFF/M MODE
9:04pm
Temp: 77
Relative Humidity: 61
Absolute Baro: 2972
R/T - .294
60' - 2.008
330 - 5.529
1/8 - 8.398
MPH - 84.53
1000 - 10.866
ET - 12.926
Trap: 110.01

#4
SETTINGS: ESP OFF/M MODE
9:32pm
Temp: 77
Relative Humidity: 64
Absolute Baro: 2972
R/T - .217
60' - 2.047
330 - 5.533
1/8 - 8.393
MPH - 87.54
1000 - 10.837
ET - 12.910
Trap - 107.34

dodger63

http://www.dragtimes.com/da-density-...calculator.php

dodger63

http://www.dragtimes.com/da-density-...calculator.php
How was your traction

BK63amg

Looks like I'm averaging 12.6s corrected...which is still a few tenths behind what the mags have gotten.

Launching was tricky in first gear (I bounced off the limited a couple times) but the track seemed prepped pretty well and my tires felt sticky to the touch. The tires felt like they hooked up around 30MPH and it was pretty smooth sailing from there.

All in all it was fun, i'm really hoping I can break into the 12.4-12.5 range completely bone stock...do you think this is possible on stock tires?