Is it realy worth
cause as i understand it once the clutch is up it stops working
unless you have traction control still have traction problem
i guess it wont work like this sounds like hes shooting lazers
http://www.youtube.com/watch?v=9FRaRVnX3wU

getting my engine rebuild next winter collecting parts atm
not sure weather to go for new manegment aswell for the extra toys you can have

Cheers S

 

if i could afford it i'd do it just for the noise!



http://www.youtube.com/watch?v=puGCda4ThvU

 

If you use it on track then maybe?! Otherwise probably not no.

 

I think the main aim is to give you enough power not to bog down but not so much you just get wheel spin, but once you find that level it can be repeated time after time, my set up includes traction control but has different setting for wet or dry so you get the perfect get away every time

 

Onionmojo that is mad i can imagine the police would love that at the traffic lights
Karlos G yea plan to use it at the pod and track nothing to seroius or competitive though
Joffy your is on a rst yea so you get no or very little spin atall yea and good starts

 

anti lag and launch control are two completely different things

 

No mate, mines actually on my saph but It would be the same principle either way, setups can be changed from how many revs to use to how much wheel spin to allow before the traction control cuts in,

 

My bird needs lunch control.....

jokes aside,

launch control and anti lag are different and i don't think the car in that video had launch control, it actually sounds more like its on its rev limit.

Launch control - makes boost at a stand still before a hard launch
ALS - makes boost when the car is moving but off throttle/boost.

They both work in similar ways, generally by retarding the timing to chuck loads of unburnt fuel down the exhaust into a hot turbo and then shove some air in as well (air injectors are often used in hard core als systems, but an open throttle will work too) and BANG the hot turbo does the rest, combustion is going on in the turbo like a mini gas turbine (no quite but sort of) spooling it up and making boost. #

A rev limit can make a car pop and bank just like that to, you skip an ignition pulse and chuck unburned fuel into a hot exhaust with a WOT

Rob,

 

and joffy mate, traction control has nothing to do with either als or launch.

Rob,

 

I knew that was how anti lag worked, but i thought launch control was simply like a fake rev limiter? i.e. you can mash the throttle with the clutch in and it will only rev to say 4k? Because you foot is on the throttle it would still be spooling the turbo?

 

its like rob says, but on mine we are setting up flat shift so i will have it on gear changes too.

 

It's not a lower rev limiter. It works by retarding the ignition at a set engine speed to a point where the engine will not rev any more. This means that the flame front created by ignition occurs that late in the cycle that it is still burning when the exhaust valves open. The energy created by burning the fuel then travels out and down the exhaust manifold, spooling the turbo. A lower rev limit doesn't really work properly as the engine isn't under load so the turbo doesn't spool properly.

ALS works in a similar principal but operates off throttle as opposed to on throttle (hence why you need an ALS valve to provide enough air to continue combustion after throttle closure).

 

I was thinking about flat shift today and figured it would be a great way to hold boost mid gear change.

You can do it wither way, both have the same effect (chucking un burnt fuel down the exhaust). however als will retard the timing rather than cut ignition (generally as far as i know).

If you sit in your car and rev it (off load) you will still make no boost, launch control is just anti lag, full throttle and a rev limit, letting you dump the clutch with some boost.

This is launch control

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

this, video, is just fucking cool and has loads of anti lag in it.... when ken lifts off and the car pops all over the place... thats anti lag. At the start of the vid when the car is static and pops, thats launch control.

http://www.youtube.com/watch?v=OZfLni6sn3g

So is this als

http://www.youtube.com/watch?v=WTAPpsL2xOU

Enjoy

Rob,

 

Rob, never said it did, I'm just saying the setup I have is all run off the same system, as is the full throttle gear change etc,

 

Thankyou verymuch to all above very very helpfull
and alot to think about

Cheers S

 

Nice, what system do you have?

Tbh you will never use anti lag unless you have a track slag... and even then not overly. Launch control is cool because it sound fucking cool but again i can't imagine people using it very often, my car will have it fitted just because my megasquirt supports it and i fancy a play, not sure if it will be any help in a fwd car tho,

The only really useful bit to have is the flat shift.

Rob,

 

launch control is very good i have it on mine there is a small button i hold down so it limits the revs to 4500rpm but has full boost (2.6 bar) this way i can get off the line fast with no wheel spin then when im moveing i let the button go and it will rev fully! and i have used it a few times on the road when im next to something with some go and i dont wont to sit their smokeing the wheels into 3rd lol

 

the scooby sounds the nuts with the als going

mine ha sthe ability to run all the above and i real looking forward to using

 

Racelogic mate, it has a clutch switch so as soon as the clutch is down the revs are set about 4500 by retarding the ignition, if its clutch activated then its pretty much the same system for the full throttle gear change to stop you over reving the car,

 

I know what your saying rob
i dunno what am building mate i keep changing my mind LOL