Auto throttle / Anti stall mods discussion - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

brn12345 · 07-02-2014, 05:21 PM

A friend of mine suggested if anything can be done with the available mapping solutions to allow for a sort of auto throttle anti stall setup. So imagine your in traffic and you have to balance throttle and clutch to keep rolling and stopping. Now what if all you had to do was let go of the clutch and the ecu would add throttle. This would be ideal if it can be switched on and off. I am thinking using the sport button to toggle this. Our cars already have something similar when cold. Try it next time the car is cold and you will find that you can let out the clutch without applying throttle and the car would move without stalling. Can something like this be programmed?

Sportsguy83 · 07-02-2014, 05:23 PM

Quote:

Originally Posted by brn12345

A friend of mine suggested if anything can be done with the available mapping solutions to allow for a sort of auto throttle anti stall setup. So imagine your in traffic and you have to balance throttle and clutch to keep rolling and stopping. Now what if all you had to do was let go of the clutch and the ecu would add throttle. This would be ideal if it can be switched on and off. I am thinking using the sport button to toggle this. Our cars already have something similar when cold. Try it next time the car is cold and you will find that you can let out the clutch without applying throttle and the car would move without stalling. Can something like this be programmed?

When cold its because it is trying to force 1500 RPMs idle to warm it up. I bet it can be implemented easily with a custom map.

chas3wba0 · 07-02-2014, 05:52 PM

A seasoned MT driver shouldn't need this...

Jyn · 07-02-2014, 05:55 PM

I think it's called an automatic transmission.

d1ck · 07-02-2014, 06:03 PM

Set your idle speed to 1500RPM. That said it seems a bit silly to me.

brn12345 · 07-02-2014, 06:15 PM

Quote:

Originally Posted by d1ck

Set your idle speed to 1500RPM. That said it seems a bit silly to me.

Ok, question is can it be something linked to the sport button? Meaning if I select sport mode idle will be 1500?

continuecrushing · 07-02-2014, 06:17 PM

you can also put a brick on the gas pedal, and just bounce off the limiter. When you need to go forward, just put the car in gear and release the clutch.

This also works well for hills. So its like a hill/traffic assist.

Caution though, now that this idea is out scion will release a new frs special edition with this feature. It will be called the FRS Monogram 10 Series 1.0 HT(hill/traffic).
Pre-order now, only 100,000 will be made.

phrosty · 07-02-2014, 06:28 PM

This does sound like a good idea.

post_break · 07-02-2014, 06:29 PM

Set the idle based on gear, I think you can do this in ecutek. If 1st gear set idle to 1,200 or something.

wparsons · 07-03-2014, 11:01 AM

Why even bother? You can get the car moving without throttle in 1st gear with a normal idle. I do it in traffic ALL the time when using the gas would get me going too fast.

If you're bored (or traffic REALLY sucks) you can get up to 3rd gear without using the gas at all too.

boredom.is.me · 07-04-2014, 03:50 PM

You can easily get to 6th gear without throttle.

brn12345 · 04-03-2017, 09:28 AM

Wanted to revisit this issue and maybe 3 years later someone has an idea on how it might be done. As much as some of the earlier posts were helpful i still cant get the desired function. Refer to the first post please to understand what is being asked.

steve99 · 04-03-2017, 08:39 PM

Quote:

Originally Posted by brn12345

Ok, question is can it be something linked to the sport button? Meaning if I select sport mode idle will be 1500?

Unless you skilled at ECU coding/programming (actual functional code changes not just altering existing maps) you going to need ecutek.

Ecutek can activate/deactivate custom maps based on position of sport or Trac buttons.

Unfortunatly ecutek doent have a custom map intup or output function to directly control idle speeds.

Then you going to have to experiment with custom maps for stuff like load vs rpm vs vehicle speed and add throttle under certian conditions.

you would have to test it very carefully so it not going to launch you into the car in front under certain conditions.

Im sure it could be done to some degree, but would require a lot of testing so it would not be dangerous.

Im pretty sure my 2012 manual Toyota corolla has something like this as if you nearly stall it, my natural reaction is to quickly depress the clutch, and the car then revs at about 2000 for a second with no throttle input, its kind scary sometimes. Im not sure id want something like that on a brz.

The best way ive found to smooth low rpm is to get maf scaling correct at idle and low rpm.

07-02-2014, 05:21 PM	#1
brn12345 Senior Member Join Date: Oct 2012 Drives: BRZ Location: Bahrain Posts: 254 Thanks: 101 Thanked 137 Times in 63 Posts Mentioned: 6 Post(s) Tagged: 0 Thread(s)	Auto throttle / Anti stall mods discussion A friend of mine suggested if anything can be done with the available mapping solutions to allow for a sort of auto throttle anti stall setup. So imagine your in traffic and you have to balance throttle and clutch to keep rolling and stopping. Now what if all you had to do was let go of the clutch and the ecu would add throttle. This would be ideal if it can be switched on and off. I am thinking using the sport button to toggle this. Our cars already have something similar when cold. Try it next time the car is cold and you will find that you can let out the clutch without applying throttle and the car would move without stalling. Can something like this be programmed? __________________ 2013 Lightning Red - 6MT Perrin Inlet Hose ~ TRD Panel Air Filter ~ OEM Modified Snorkel ~ Revolution 4-2-1 EL Header ~ HKS Resonated Front Pipe ~ BRZedit self tune ~ KW Clubsport Coilovers ~ AP Racing Big Brake 4 Piston ~ Whiteline Front Endlinks ~ Perrin Rear Endlinks ~ WedsSport TC105N 17x8 42+ ~Dunlop Direzza II Star Spec 225/45/17 ~ STI Trunk Lid Spoiler

07-02-2014, 05:52 PM	#3
chas3wba0 Senior Member Join Date: Jul 2013 Drives: Yes Location: Bay Area, CA Posts: 1,053 Thanks: 1,630 Thanked 813 Times in 407 Posts Mentioned: 5 Post(s) Tagged: 0 Thread(s)	A seasoned MT driver shouldn't need this... __________________ "If thy pleaſure be in Underſteere, thou art Weird." - Distraxi

07-02-2014, 05:55 PM	#4
Jyn Noob Join Date: Jan 2014 Drives: FR-S Mammogram Location: Austin Posts: 1,594 Thanks: 577 Thanked 888 Times in 485 Posts Mentioned: 24 Post(s) Tagged: 2 Thread(s)	I think it's called an automatic transmission. __________________ :@ChaoyD

07-02-2014, 06:28 PM	#8
phrosty Senior Member Join Date: Apr 2013 Drives: 2013 FR-S Location: Seattle Posts: 806 Thanks: 202 Thanked 321 Times in 199 Posts Mentioned: 18 Post(s) Tagged: 1 Thread(s)	This does sound like a good idea. __________________ 2013 Whiteout 6AT FR-S \| Perrin Inlet Tube + 2.75" CAI \| OpenFlash Header \| P&L Catback \| 4.88 Final Drive \| Dialed in OFT 2.0x Stage 2 E85 \| 18x8 Enkei Raijin + 225/40 Michelin Pilot Super Sport \| 17x7 Stock + 215/45 Michelin X-Ice Xi-2

04-03-2017, 09:28 AM	#12
brn12345 Senior Member Join Date: Oct 2012 Drives: BRZ Location: Bahrain Posts: 254 Thanks: 101 Thanked 137 Times in 63 Posts Mentioned: 6 Post(s) Tagged: 0 Thread(s)	Wanted to revisit this issue and maybe 3 years later someone has an idea on how it might be done. As much as some of the earlier posts were helpful i still cant get the desired function. Refer to the first post please to understand what is being asked. __________________ 2013 Lightning Red - 6MT Perrin Inlet Hose ~ TRD Panel Air Filter ~ OEM Modified Snorkel ~ Revolution 4-2-1 EL Header ~ HKS Resonated Front Pipe ~ BRZedit self tune ~ KW Clubsport Coilovers ~ AP Racing Big Brake 4 Piston ~ Whiteline Front Endlinks ~ Perrin Rear Endlinks ~ WedsSport TC105N 17x8 42+ ~Dunlop Direzza II Star Spec 225/45/17 ~ STI Trunk Lid Spoiler

07-02-2014, 06:03 PM	#5
d1ck Senior Member Join Date: Jul 2012 Drives: Black 2013 FRS Location: Newfoundland Posts: 249 Thanks: 31 Thanked 83 Times in 54 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	Set your idle speed to 1500RPM. That said it seems a bit silly to me.

07-02-2014, 06:17 PM	#7
continuecrushing Join Date: Mar 2013 Drives: 2013 Firestorm FRS Location: Lake Elsinore, CA Posts: 2,707 Thanks: 1,231 Thanked 2,144 Times in 1,003 Posts Mentioned: 73 Post(s) Tagged: 2 Thread(s)	you can also put a brick on the gas pedal, and just bounce off the limiter. When you need to go forward, just put the car in gear and release the clutch. This also works well for hills. So its like a hill/traffic assist. Caution though, now that this idea is out scion will release a new frs special edition with this feature. It will be called the FRS Monogram 10 Series 1.0 HT(hill/traffic). Pre-order now, only 100,000 will be made.

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