RomRaider Logo

RomRaider

Open Source ECU Tools
 FAQ •  Register •  Login 

RomRaider

Documentation

Community

Developers

It is currently Sat Feb 21, 2026 11:25 am

All times are UTC





Post new topic Reply to topic  [ 43 posts ]  Go to page 1, 2, 3  Next
Author Message
 Post subject: Launch control for auto transmissions (Idea)
PostPosted: Mon Jan 05, 2015 6:13 am 
Offline
Experienced
User avatar

Joined: Sat Jan 12, 2013 7:58 pm
Posts: 130
So I've just finished reading (again) the $10 antilag trick on nasioc where they hacked the IAT sensor wire to trick the ECU into applying a timing so low it would spool the turbo from all the late combution.

Cutting my IAT wire isn't all that exciting to me. I shy away from mods that deface the cars.

SO now, I'm asking the romraider guys if it's possible to apply this method to create a launch/stall boosting mod for the roms:


IF brake is pressed and throttle is WOT, then apply timing to get -17 degrees total timing and spool until u release the brake pedal.
Once pedal released the original timing mapping is applied.

I assume the ECU has access to the brake switch? If not, it must have for the e-Brake.

let me know how this sounds. There are 5EAT guys running big turbo who also suffer from 2.7s 60ft times!


Top
 Profile  
 
 Post subject: Re: Launch control for auto transmissions (Idea)
PostPosted: Mon Jan 05, 2015 11:26 am 
Offline
Moderator
User avatar

Joined: Sat Jul 06, 2013 12:55 pm
Posts: 3297
Location: NI
is this for when taking off from stationary yeh not when moving - what about reducing the base idle timing above say 3000rpm to whatever negative value you want and see what that does for it?

_________________

Good luck and may the logs be ever in your favour!


Top
 Profile  
 
 Post subject: Re: Launch control for auto transmissions (Idea)
PostPosted: Mon Jan 05, 2015 11:49 am 
Offline
Senior Member

Joined: Thu Aug 03, 2006 2:40 pm
Posts: 1934
are you able to run carberry with an AT?


Top
 Profile  
 
 Post subject: Re: Launch control for auto transmissions (Idea)
PostPosted: Mon Jan 05, 2015 12:44 pm 
Offline
Experienced
User avatar

Joined: Sat Jan 12, 2013 7:58 pm
Posts: 130
Someone tried lowering the timing there but it was so slow moving out of the load cells


I do not know if i can run carberry?
I'm a 32bit 2004 JDM Legacy GT


Top
 Profile  
 
 Post subject: Re: Launch control for auto transmissions (Idea)
PostPosted: Mon Jan 05, 2015 1:05 pm 
Offline
Moderator
User avatar

Joined: Sat Jul 06, 2013 12:55 pm
Posts: 3297
Location: NI
if its 32bit the no carberry.

I'm talking about the idle timing though not the base timing. Idle timing is what you hit when not moving some ECU's have a range of settings you can adjust, some have only 4 or 5 cells. If you have a big enough range you could set more aggressive figures in higher stationary RPM's to get a little gain.

_________________

Good luck and may the logs be ever in your favour!


Top
 Profile  
 
 Post subject: Re: Launch control for auto transmissions (Idea)
PostPosted: Mon Jan 05, 2015 3:56 pm 
Offline
Experienced

Joined: Thu Jan 09, 2014 10:17 pm
Posts: 394
This should be a a very simple thing to do in the merpmod.


Top
 Profile  
 
 Post subject: Re: Launch control for auto transmissions (Idea)
PostPosted: Mon Jan 05, 2015 4:20 pm 
Offline
Experienced
User avatar

Joined: Sat Jan 12, 2013 7:58 pm
Posts: 130
Ok bluegod, I will look into that when I get home

ProfessWRX,
I'd love to test this out, how do i go about this? Do i send my current rom?

Also, point me to your thread.


Top
 Profile  
 
 Post subject: Re: Launch control for auto transmissions (Idea)
PostPosted: Mon Jan 05, 2015 5:02 pm 
Offline
Moderator
User avatar

Joined: Sat Jul 06, 2013 12:55 pm
Posts: 3297
Location: NI
check if merpmod is available for your rom:
http://romraider.com/forum/viewtopic.php?f=40&t=7674

If you can post your rom or let us know which rom your running we can help more.

_________________

Good luck and may the logs be ever in your favour!


Top
 Profile  
 
 Post subject: Re: Launch control for auto transmissions (Idea)
PostPosted: Mon Jan 05, 2015 5:07 pm 
Offline
Experienced
User avatar

Joined: Sat Jan 12, 2013 7:58 pm
Posts: 130
ROM:
https://www.mediafire.com/?d4uxh4jb6ddotc8

If it's possible, i rather not run speed density. Not until i get wideband


Top
 Profile  
 
 Post subject: Re: Launch control for auto transmissions (Idea)
PostPosted: Mon Jan 05, 2015 5:13 pm 
Offline
Moderator
User avatar

Joined: Sat Jul 06, 2013 12:55 pm
Posts: 3297
Location: NI
you can run it in MAF mode so not running speed density :)

I can't see a free merpmod patch for your rom A2ZJC00G - there is a listing for A2ZJD02G but you would have to check if that rom is compatible with your ECU/car as I don't know off the top of my head.

If you were able to switch to A2ZJC00G (copy posted here: http://www.romraider.com/forum/topic699.html ) then you could apply merpmod and enable launch control stuph and play with it (but keep it in MAF mode instead of SD mode).

_________________

Good luck and may the logs be ever in your favour!


Top
 Profile  
 
 Post subject: Re: Launch control for auto transmissions (Idea)
PostPosted: Mon Jan 05, 2015 6:29 pm 
Offline
Experienced
User avatar

Joined: Sat Jan 12, 2013 7:58 pm
Posts: 130
What's an easy/safe way to check for compatibility?

edit: could i just flash the rom and assume if it went through it's compatible?
could it spoil the ECU and brick it?


Top
 Profile  
 
 Post subject: Re: Launch control for auto transmissions (Idea)
PostPosted: Mon Jan 05, 2015 8:18 pm 
Offline
Moderator
User avatar

Joined: Sat Jul 06, 2013 12:55 pm
Posts: 3297
Location: NI
test write should confirm if the rom will load OK for you. Worst case it won't start so just flash your old rom back.

_________________

Good luck and may the logs be ever in your favour!


Top
 Profile  
 
 Post subject: Re: Launch control for auto transmissions (Idea)
PostPosted: Mon Jan 05, 2015 8:42 pm 
Offline
Experienced

Joined: Thu Jan 09, 2014 10:17 pm
Posts: 394
JMlegacy wrote:
Ok bluegod, I will look into that when I get home

ProfessWRX,
I'd love to test this out, how do i go about this? Do i send my current rom?

Also, point me to your thread.


viewtopic.php?f=37&t=11033


Top
 Profile  
 
 Post subject: Re: Launch control for auto transmissions (Idea)
PostPosted: Tue Jan 06, 2015 10:29 pm 
Offline
Senior Member

Joined: Sat Feb 12, 2011 11:27 pm
Posts: 2032
Location: Northern NSW
D02G works in C00G ecus


Top
 Profile  
 
 Post subject: Re: Launch control for auto transmissions (Idea)
PostPosted: Wed Jan 07, 2015 12:03 am 
Offline
Experienced
User avatar

Joined: Sat Jan 12, 2013 7:58 pm
Posts: 130
OK.

Today I checked learning view and saw an ECU rom error.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 43 posts ]  Go to page 1, 2, 3  Next

All times are UTC


Who is online

Users browsing this forum: No registered users and 5 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group
Style based on FI Subsilver by phpBBservice.nl