Launch Controller [Archive] - Australian LS1 and Holden Forums

TheHeat

13-04-2004, 09:43 PM

Does anyone have any information or or can suggest a 'launch controller' to suit a 6 speed manual transmission. Is there such a beast that can be used for off street dragging with a manual? I have seen one used with an auto and been told it can also work with a manual. I would be grateful if any of the forum contributers could shed some light on this subject.
The Heat clocked a respectable 13.2 on Easter Sat at the King Cobra Test and Tune with a 60' of 1.774. Still quite mild for some of the LS1'ers in this forum but we are getting there slowly...every improvement in technique shaves valuable time off.

jsttry

13-04-2004, 09:52 PM

What did you do to drop the 0.2sec? Any mechanical changes or just driver skill?

large

13-04-2004, 09:54 PM

With a 60" like that I would be more than pleased. So was it 33deg and dry or 33deg and wet?

TheHeat

13-04-2004, 09:58 PM

34 and dry with a track temp of around 50. Bloody hot! We ran consistently at 13.5, 13.6 last meet we jagged a 13.402. Fitted different tyres and a harder launch and dropped to 13.265. Thats our quickest so far. Busting to break into the 12's now! Hard in a manual though hence the query re the launch control...with clutch, brake, staging lights, tree, accelerator and 4000rpm to hit before the lights change all with a reaction of .476 its a bit like being a one armed newsboy with a 7 day itch....and people reckon this drag racing is easy....

SPJ

13-04-2004, 10:06 PM

RACELOGIC...

No not having a go at you...the name of a traction/launch control system...

P.M Dane as he has one and swears by it... :D

markone2

13-04-2004, 10:07 PM

:) 1.774 for a 0 to 60ft is generally the province of 11 second / low 12 cars.
Some bloody good driving going on up there, why not post your time slip to one of the mods ( or here ) and be the 1st NT car on to the revered *List*

http://www.ls1.com.au/forum/showthread.php?t=3624

TheHeat

13-04-2004, 10:10 PM

RACELOGIC...

No not having a go at you...the name of a traction/launch control system...

P.M Dane as he has one and swears by it... :D

Any idea of cost? Will it work with a manual trans?

TheHeat

13-04-2004, 10:12 PM

I wouldnt be so presumptious as to post our time slip Markone not in the company of some of the LS1'ers in this forum. They are pulling some great times...we still have our 'L' plates on. When we break into the 12's I will post the time and techy details.

SPJ

13-04-2004, 10:17 PM

Any idea of cost? Will it work with a manual trans?

I have no idea on cost...
Talk to STARR Performance in Melb...

Danes car is a Blown M6...

Plan B

13-04-2004, 10:24 PM

Launch control can be achieved via LS1Edit. Do you have edit?

ntae

13-04-2004, 10:26 PM

there will be ls1 edit in darwin from wednesday

Delco

13-04-2004, 10:28 PM

there will be ls1 edit in darwin from wednesday

The heat has been offered a free touch up already :D

YIIR8

13-04-2004, 10:29 PM

Launch control can be achieved via LS1Edit. Do you have edit?

Do tell.....

TheHeat

13-04-2004, 10:36 PM

pardon my ignorance but what is LS1 edit?

markone2

13-04-2004, 10:42 PM

The 1st mod you do to an LS1 powered vehicle before venturing within one mile of the 1/4 mile :D

SPJ

13-04-2004, 10:44 PM

pardon my ignorance but what is LS1 edit?

DO a search....
A whole nights reading...

Delphi

13-04-2004, 10:44 PM

pardon my ignorance but what is LS1 edit?

The heat must be incredible in Darwin

Delco

13-04-2004, 10:45 PM

pardon my ignorance but what is LS1 edit?

LS1edit is just one software tool a tuner uses to tune a PCM .

Yes a type of launch control can be achieved in the PCM but at a cost - It cuts fueling like the rev limit which can be dangerous in the wrong hands.

proper launch control cuts individual cylinders ignition to hold rpm at a set point , cutting fuel to do the same thing can detonate a motor on the transition - but any good tuner already knew that :)

Racelogic is the way to go for launch control as it also has tunable traction control. - Dane feel free to step in with your experiences.

RIDE:42

13-04-2004, 10:46 PM

pardon my ignorance but what is LS1 edit?
:driving := standard
http://www.ls1.com/forums/images/smilies/3gears.gif = EDIT

Delphi

13-04-2004, 10:48 PM

pardon my ignorance but what is LS1 edit?

The HEAT must be incredible in Darwin

jsttry

13-04-2004, 10:51 PM

pardon my ignorance but what is LS1 edit?
Take a search through the forum, there is a lot of info. Basically it is a way of modifying the factory computer (PCM). Things that can be modified are air/fuel ratios, auto shift points, timing and torque management just to name a few. Some example of things that can be changed are here: http://users.senet.com.au/~dtech/faq.htm

Your car has already had an LS1Edit when down south according to the tech specs I've seen, however it would probably be worth while getting it checked in realtime on a dyno in the Darwin weather. Delco is arriving tomorrow if you'd like to have a chat with him. PM me and I can arrange a get together with yourself and John S if you like. No harm in seeing what Daniel can do if he's offering it free :)

PS and in the time it took me to respond there were 5-6 other posts :bash:

TheHeat

13-04-2004, 10:52 PM

Thank you...I dont feel like such a dumbass now! I only do the driving...the techy stuff is left to our most holy and all knowing gurus....

Plan B

13-04-2004, 10:56 PM

LS1edit is just one software tool a tuner uses to tune a PCM .

Yes a type of launch control can be achieved in the PCM but at a cost - It cuts fueling like the rev limit which can be dangerous in the wrong hands.

proper launch control cuts individual cylinders ignition to hold rpm at a set point , cutting fuel to do the same thing can detonate a motor on the transition - but any good tuner already knew that :)

Racelogic is the way to go for launch control as it also has tunable traction control. - Dane feel free to step in with your experiences.

So the standard rev limiter cuts out the fuel only? Interesting.

TheHeat

13-04-2004, 10:56 PM

Thanks JSSTRY...have you got my number at work...I have suggested the guys come and have a bo peep when they get up here...more than willing to take on board suggestions etc....

jsttry

13-04-2004, 10:57 PM

Thanks JSSTRY...have you got my number at work...I have suggested the guys come and have a bo peep when they get up here...more than willing to take on board suggestions etc....
No I don't. I've just PM'ed you my contact details so you can get in touch with me.

chops

14-04-2004, 08:49 AM

As mentioned by others, with 60's like that, I'm not sure that launching is costing you time!

As markone2 suggested, the time slip might help, as the experienced drag racers could analyse this to tell you where you stand to make the best gains.

SS346

14-04-2004, 08:55 AM

SS346

14-04-2004, 09:04 AM

Heres my opinion, when you race a car at the track, you are racing to achieve the best possible time, so what i do when at the track is drive the car as if i wanted to break something :eek: because its sickening to hear people whinging that their et was pathetic :rolleyes: because they were not getting out of the hole quick enough, no excuse i say!

With a manual, what i do is while staging, i hold the engine at around 4000rpm, as soon as the christmas tree starts changing colours :stupid: i mash the throttle and come out of the hole on the limiter! that way if i get a shite et well i cant blame it on my 60 ft time.

Thats my opinion :kapow:

With ls1 edit you can set a rev limiter and use it like launch controll, imo theres no need for a launch controll in an m6.

TheHeat

14-04-2004, 02:34 PM

Thanks guys...what do I do to post a time slip. We reckon we are loosing time on the shifts particuarly 2nd - 3rd but it would be handy to get some analysis and opinions on how to improve from the more experienced racers in this forum. Always ready to listen and take advice from those more knowledgeable than I.

SPJ

14-04-2004, 03:06 PM

RIP SHIFT!
Will solve those 2-3 problems...

jsttry

14-04-2004, 03:12 PM

pardon my ignorance but what is LS1 edit?
See http://www.ls1.com.au/forum/showthread.php?t=3624

Timeslips should be alidated quicker than 12.5 or faster than 110 mph, you can validate your time by submitting two time slips with your race number on the night

PM the details to a moderator eg STRIFE in the following format for updating the list.

Format:
Name (Make/Model) Body Type, Race Weight (lb - If known, inc. driver)
1/4 Mile ET, Trap speed (mph), 60', Modifications and Tranny type according to the legend below:

C = Cam
H = Heads
D(xxx) = Displacement (B-Bore, S-Stroke)
Power adders (Nitrous, SC, Turbo)
Trans Type (M6, A4, etc)
(TC) = Torque Conv.
x.xx:1 = Diff Ratio
S = Slicks,
V = Validated Timeslip

TheHeat

14-04-2004, 08:22 PM

Ok ta...still well above 12.5 so I wont bother the scorers with that one then.

YIIR8

14-04-2004, 08:32 PM

Ok ta...still well above 12.5 so I wont bother the scorers with that one then.

No no no.....you can still send you details into strife as mentioned above. You only need a timeslip if < 12.5 secs.

Cheers.........D

TheHeat

14-04-2004, 09:05 PM

OK time posted to Strife...will appreciate any analysis, clues, suggestions from experienced members when it gets posted. Never too old to learn something new

Plan B

14-04-2004, 09:26 PM

13.2 with a 60' of 1.7 in that temp with a stock engine is just about perfect! All you need is power now. :)

TheHeat

14-04-2004, 09:39 PM

Thank Plan B thats a confidence booster...just need a few more legs at the end of the straight and some faster shifting and we reckon we can get it sub 13.0 as soon as the weather cools down a bit more....that will be a milestone that we want to achieve this year....we are reasonably happy with the way we are going so far considering no engine mods to date and we were mid 14's two meetings ago.