Miata Turbo Forum - Boost cars, acquire cats.

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-   -   learn me on some launch control! (https://www.miataturbo.net/megasquirt-18/learn-me-some-launch-control-19012/)

Braineack 04-01-2008 02:18 PM

is it doing this when you are driving?

90turboMX5 04-01-2008 02:22 PM

yes but only when I clutch to shift and I accelerate with the clutch on (depressed). It accelerates kinda rough too.
It does it when I try to launch too. And when I'm in neutral and accelerate

Braineack 04-01-2008 03:00 PM

when does the green launch control light, light up?

90turboMX5 04-01-2008 06:00 PM

I dont know, I'll check and let you know. tomorrow. I will also datalog it.

bryantaylor 04-01-2008 08:33 PM

alright bitches. got it all wired up and "launch on" comes on when i hit the clutch. but i cant test it untill i get my exhaust gaskets in the mail. can someone post a screen shot of their settings to give me an idea on the retard settings on such?

90turboMX5 04-01-2008 08:33 PM

the launch control light gets red only when I press the clutch.
It works now, I changed the Rev Limiter to cut the fuel instead of spark and it works. I also activated the flat shift, what a great feature, it's fun.
Why do you guys think that the launch control only works with fuel cut? and not spark cut? maybe spark cut is just flooding the engine? is fuel cut harmful to the engine? AFRs go all the way lean, no fuel..

90turboMX5 04-01-2008 08:36 PM


Originally Posted by bryantaylor (Post 236891)
alright bitches. got it all wired up and "launch on" comes on when i hit the clutch. but i cant test it untill i get my exhaust gaskets in the mail. can someone post a screen shot of their settings to give me an idea on the retard settings on such?

Mine are:

Start retarding at 3000
Retard to 5 degrees
TPS = 30 (I dont think it matters with 1.6)
Hard cut= 3200
Variable= off
Arming flat shift rpm= 4000
retard at= 5800
hard cut= 6000

It works since 5 minutes ago.

bryantaylor 04-01-2008 08:42 PM

thanks man, i will give those a try. hopefully i will have the car running again this weekend

90turboMX5 04-02-2008 09:04 AM

I dont know if I like launch control. It may be good for drag racing but I cant heel toe anymore because it will limit my heel toe to 3200 rpms

240_to_miata 04-02-2008 12:22 PM

um... not if you have it set up correctly.


Oh... nvm, you dont have a variable TPS do you?

EDIT:

Also, learn how to heal tow double clutch. That way you are changing the RPMS while the clutch is out. Its just habit for me now to double clutch at every downshift.

Braineack 04-02-2008 12:47 PM

if you are road racing, you don't need launch control....

if you are drag racing, you don't need heel toe....

240_to_miata 04-02-2008 08:16 PM

if you are autoxing... its nice

if you are boosted...flat shift keeps you on boost more...so road racing is back in


if you can set it up right its a nice feature to have, not your every day feature but still usefull none the less.

bryantaylor 04-16-2008 09:28 PM

got the car up and running, boost controll works. havent tried to actually lauch yet because i am scared of my 1.6 open read end. but i just wanted to say that flat shit is cool as hell!

timk 04-16-2008 10:18 PM

I like launch control when turning from a set of red lights and taking off completely sideways around the turn. :)


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