How to launch control with A7 370z?
 

I saw many videos on the youtube about how to do launch control.
Is it possible to do launch control with A7 370z?
Videos on youtube saying that i have to turn VDC off, and put left foot on the break as deeply as i can, and mildly press on gas until rev reachs around 3500~4000, then release the break, and quickly press the gas as hard as i can. I haven't try it out yet, because i'm afraid of ***k up my gearbox.
Is it safe to do launch control? Does it decrease the durability of the clutch & break? What's your IMO about launch control?
plz, reply asap!! Thank you guys

P.S
How can i make rev sound like him??
YouTube - KillerBee's 370Z (0:07 On video)

Reply ASAP? LOL. Have a big race coming?

I'm not sure I'd call holding an AT with the brake while revving 'launch control'...might as well call depressing the accelerator 'launch control' too. Can you hold the car with the brake while revving and then pop the brake and floor it. Sure. However, at a driving class I took last year, the instructor claimed you'll get faster starts just flooring the accelerator from a stop and without holding the car at high rpm with the brake.

If you want your exhaust to sound different, look at the intake/exhaust thread. Prepare to spend some cash.

Chalk your wheels, hold the ebrake, make sure you have a midget in your trunk, and your holding the brake AND the gas pettle down ALL the way. Type R badges will also help

News flash. If you have an AT, you don't have a clutch. And while I'm being nitpicky, you don't have breaks either. Brakes, yes. Breaks, no. Well, hopefully not anyway. :rolleyes:

If you want your A/T to lasts longer,DO NOT try launch control,get the 6MT for the best performance,A/T is for comfort driving,not for racing....

I don't really think that's an accurate statement. So far the 7ATs have proven to be very, very formidable under race conditions.

Launch control is usually a process where the ECU and TCM and a bunch of sensors work together to figure out the perfect launch for you and do it. What you're describing doing is simply launching at a certain RPM.

yup thats nothing like LC thats just old fashion brake boosting an automatic

:gtfo2:

I have the fastest posted 1/4 mile times. A/t ftw.

Yes, an AT is the best choice for a drag race, but not the most desirable for a road race short of a "real" sequential race gear box. Aside from the fact that an automatic takes too much of the driver out of the experience for my liking.

reviving an old thread here.

I too drive an AT and am interested in finding the best launch technique.

So is the general consensus simply to have VDC off and floor it? Or use the brake and rev first?

If reving first is optimal, what would be the suggested rev range? (Without overstressing the gearbox).

I don't think the Auto has a true launch control. Thats one thing I miss from my DSG GTI, I could depress the brake and get on the gas and the RPM would not go higher than 3k RPM, though the sweet spot was around 1500RPM or so. Perfect launches every time. :)

Launching??? Obviously we have a few astronauts here, wish they'd get Lost in space.

i've tried to launch it every which way and if you hold the brake and give it gas its good for about 1500 rpm, as soon as the back wheels twitch the ecu kill the engine power. I launch at 1100 rpm at 27 psig tire preasure and it hooks and cuts a 1.964 60 ft time.
Im waiting for my 2700 rpm torque converter.
Oh Ya the 7 AT is quicker in the 1/4.

good info to know, may come in handy, cheers :tup:

The 7AT could use launch control thats for sure.

formula one cars are semi autos. the fastest 1/4 times in the world are held by autos. GL tyring to race a pure manual. manuals are for fun not for performance.

the reason it does no good to rev up to 4-5k is because of the stock stall. the engine is going to bring the power back down when you try to launch so your actually losing time. its better to just lightly have the brakes pressed and just barely has the gas pressed and just ease into the throttle in a nice swift fashion. ive already learned to launch mine at almost 100% wot form a dead stop with minimal wheelspin. i guess years of driving a fwd car before my TA and the Z helped with that. the 7at is really easy to launch in my opinion

I will say this, I have new stock tires on and was doing some 0 60 times with my Cobb accessport and with the VDC off and I can floor the gas and still not spin the tires. So at this point and time launch control would help and shorten my 60 ft and lower my times. I was doing 2.4 60 ft. on a decent road.Around 2500 rpms to 3k rpm would be a good level.

With the trans in neutral, mash the throttle to redline then, slam it into drive. I guarantee this will get you noticed!

You don't need to bring your car up to 4000 rpm...only turbo autos do that to build boost off the line. In an NA you can power brake a little maybe 2000rpm at most but anything over that will cause you to spin up the wheels and put unnecessary stress on your torque converter. Also, don't power brake for more than a few seconds or you will blow your your converter...I've lost count at how many times I've seen people do that at the track.

As far as the 370... Turn your traction control off, make sure you have your tires warmed up (if you have drag radials) street tires don't require any warm up...slightly power brake...maybe 2000rpm at most however, you can launch without power braking at all...the key is to allow the car to squat on the rear suspension by carefully applying throttle so the car shifts the weight to the rear so you get traction THEN go WOT ...simply flooring it is stupid, you will do nothing but spin and waste time.

Similar to late braking on a motorcycle...you have to load the suspension before you get on the brakes hard, a lot of rookies tend to just jam on the brakes which causes the front wheel to skid...hence a crash usually follows! In the end it's all about loading and unloading your suspension correctly. The 370 is not set up as a drag car, the suspension does not have enough travel to allow the car to load the rear suspension enough for a really hard launch so keep that in mind. It can be done but it's not optimal with our set up.

In the 7AT if you brake and gas too, after a second or so the ECU takes control and kills the rpms so you cant really hold the brake while giving it gas.

Good ol' brake override. One of the many reasons I usually go with MTs. Of course, due to the Toyota debacle it wouldn't surprise me if they start putting it on MT cars as well some day soon. Then we can all kiss the ability to heel and toe goodbye. :(

If the e-brake was stronger, it'd help...

You could at least sit at the line with your foot off the brake and just roll to WOT and get a good launch.

I've done a brakestand launch a couple times, and it feels quicker, but I bet it's the same.

I also did a good launch without wheelspin and no brakestand, and was pretty wicked fast...

I think on a good track, you could skip the brakestand, again if the ebrake would hold the car just enough to prevent it from rolling...

This is what I do with both of my Z and Max, had to learn to do that with the Max as it will burn up some tires if I floor it from a stop.

:tiphat:

:tiphat:

Rules to launch an Auto by.


#1 do not put your car in neutral first and rev it up... ECU will not let 1st engage until the rpm drops to a normal preset standard..

#2 you dont have a 4k stall on your car. dont bother trying to hold your brake and rev up to 4-5k ect.. the ECU will take over and drop your rpm before you take off. and again you lose precious time waiting.

#3 use the hippopotamus rule for launching. this rule is.... while you press your gas. you say hippopotamus in your head. by the time you finish the word the gas pedal should be compressed all the way. (it works)

#4. DONT let your adrenalin get the best of you. Rule #3 is applied to stop #4 from being Broken

#5.Dont worry with the lights. or the guy beside you. once the green shows. launch when your ready. as long as you dont cross the beam your E.T time wont start

#6. push your Seats as far back as possible. mainly for the driver. but every little bit of weight transfer towards the back helps. ofcourse if you cant touch the gas then move it foward some.

7# AVOID the water with street tires. and though you want to bleep your tires a bit (1-2 seconds just enough for a couple revolutions) its not to get them hot and sticky.. that doesnt work on street tires. your doing it to knock off debris that would have come between the pavement and your tire reducing traction. IE gravel/dirt

#8 drain your windshield washer fluid before hand. reduces weight + weight sitting at the very front of the car its a double bonus.

#9 obviously remove sparetire/jack...

#10 One of the most important rules and biggest Killers of a E.T is wheel play... every little bit you move your wheel to the left or right hurts your E.T because your no longer going in a straight line from point A to B. now of course its impossible to keep it perfect, but you want to keep all steering corrections as minimal as possible and this all starts with Staging as Straight as Possible.

Ive drag raced for many years and those most of these steps seem obvious ect. some people who are new to it all never think about these things. these few easy steps can help someone just starting to dragrace any car along with an auto.

:tiphat::tiphat:

I have successfully implemented launch control for one of my customers. Here is the video of it working with a 2 step rev limiter:

https://m.youtube.com/watch?v=FkCRWB...ature=youtu.be

I did this as part of a full speed density tune on his Stillen supercharged g37.

Hearing infiniticare.com Has successfully implemented launch control with 7AT via ecutek.

yup, that's me :driving: