TSC sport mode different injection tables ???
 

Hi, I've come accross a forum thread where a guy asserts that VSC sport mode (VSC, not AT) changes the ECU program and uses a more agressive injection/advance parameter table... he claims to have worked on this himself (don't know in what context). Others in the same thread confirm this and claim the torque dip is less noticable in VSC sport mode than in normal mode.


Any echo to this around here?

No

If it does its very minute feeling. I sense a change between full tank and empty tank. If vsc does something to speed its negligible compared to how much the tank has in it

That guy, like me after BBQ Thursdays, is full of shit.

How about a link? :sigh:

:thumbsup:

It probably feels faster, because the aids aren't cutting in as much.

Link: http://gt86france.forumpro.fr/t1619-...ls-changements


This post (14th of the page), sorry in French, but google should transate OK:


Je persiste et signe.. Il y a deux tables de réglages de l'avance (ça c'est sur j'ai participé aux paramétrages), deux tables sur les ouvertures injecteurs et angles de cames (Kevin m'en a parlè). Les deux tables de réglages d'avances sont différentes. Une plus agressive que l'autre. Mais, si ma mémoire est bonne, il n'y a pas grand chose. Sur ma titine, j'ai de meilleurs résultats en mode sport qu'en mode normal. C'est pas moi qui le dis, c'est torque pro.. C'est du au fait que nous avons optimisé les réglages... http://illiweb.com/fa/i/smiles/icon_bounce.gif
Voir Kévin pour de plus amples renseignements... http://illiweb.com/fa/i/smiles/drunken_smilie.png

Think bout it, when you fully turn off the TC & VSC, does Sports Mode stay on?

Yeah~~~ wouldn't make sense for Toyota/Subaru to make Sports Mode better than normal mode, but when TC & VSC is off, Sports Mode won't turn on.

;)

"I persist and sign .. There are two tables of settings in advance (this is on I participated in settings), two tables on the injectors opening and cam angles (Kevin told me about it). The two tables are different settings advances. A more aggressive than the other. But, if my memory is correct, there is not much. My titin I better results than in normal mode sport mode. This is not me saying torque is pro .. This is due to the fact that we have optimized the settings ..."

Limited understanding here, but I have yet to see anyone in our Software Tuning forums mention anything about differing timings for VSC. Yelling "PPPPPPPOOOOOWOWWWWWWWEERRRRRRRRR" in your Clarkson voice probably gives you more power.

Thanks for posting the translation, it's pretty understandable... about "torque pro" (wharever that is) he says "it's not me who says it's different, it's torque pro" (I assume he claims that he has some measures with "torque pro" that confirm his sayings).


Anyhow, I also doubt about this, although I've never used VSC Sport Mode or TRC Off myself... I find the back kicks around enough in standard mode!

@Harvey thanks for the link! Interesting forum you have there :-)

Torque Pro is an Android app which connects to an OBDII Bluetooth dongle.
Very useful for a lot of things, proving unicorns exists is not one of them.

I would doubt a dyno-chart as proof of this claim until there was a second independent dyno chart posted.

Salut Harvey, j'ai posé la même question par ici: http://www.ft86club.com/forums/showthread.php?t=24911

Still no definite answer, it seems.

Hum.... the last post is pretty assertive:

Obviously being the last post doesn't mean it's true.


PS: Bonjour Guillaume... Belgique, France ?

Well yeah, @86drift claims there are different engine maps but on what ground?


I suppose the only way to find out is to have a look the OEM maps. A professional tuner would surely be able to do that?
@shiv@vishnu, @PERRIN,@MAPerformance?

PS: les deux ;)

http://i62.tinypic.com/2a63yur.png

The MAPs for pedal/torque/throttle are indeed different. I am not sure I understand what you are stating in the first post though.

If I understand this correctly, I assume these people are right? The Sport Mode does indeed change the way the car responds to accelerator action regardless of if it's sliding or wheel spinning (so sport mode doesn't only affect sliding/spinning control, but also ECU mapping)? For example, at 50% accelerator at 5200RPM the torque requests aren't the same, therefore the power requests aren't the same either...


in fact I'm not sure I'm understanting all this that well. For a given RPM in a given gear the car goes at a given speed and torque will depend on wind, hills, load, road state, .... so what does it mean to say at 50% accelerator and 5200RPM I get 230N/m (ort whatever the torque unit is)?

I am only confirming that assertive quote from your post.
Like I said, I am not sure it relates to what you are stating in the op.

Well.. it does relate at least a little. Basically, I'm just trying to better understand exactly what VSC Sport mode does (other than "it allows more drift" or "it handles closer to what the driver imagined" as in the manual)...


My understanding is that even in situations with no "drift"/"skid"/"wheel spinning" one should experience a different feel of the car because the accelerator will not repond in the exact same way... this doesn't mean "it will be more powerful" or anything, but it's no surprise to feel some difference (and maybe some might qualitfy it as feeling more agressive)?


I'll try messing around with GTS to see if it helps me understand anything. I guess it shows throttle open ratio (0 to 100% open)... does it show accelerator pedal "ratio" (0 to 100% down)?

Very interesting chart! Thanks!
Could you please post the two datasets you got there in full?
-And what software is that?

Check mad_sb's thread.
http://www.ft86club.com/forums/showthread.php?p=721246

It's tunerpro but you'll see it using romraider as well.

Also this thread probably should have been in the technical software tuning section.
Those guys probably don't look at the general sections.

Well... advantage of having this thread is than non tuning geeks also might learn something useful (although it will probably more interisting than useful I suspect!)

yeah, I meant you would have much better answers from those guys.

Posted a link to this in tuning.

Hmm. Looked at my stock ROM. There are two tables that are different, but ours are labeled Requested Torque A (Accelerator Pedal) and Requested Torque B (Accelerator Pedal) in ROMRaider.

Our table B seems to be the Sport table.

I'm not sure exactly what you're asking - but yes, there are different requested torque maps for each of the modes (in the subaru's with SI drive, it's intelligent, sport and Sport sharp).

In the turbo models (like the wrx, sti, gt) the requested torque table also ties up to wastegate duty cycle, and boost tables - in the FRS it's really just requested torque (so the ratio of torque that is requested relative to accelerator angle). And no, ignition maps are not affected.

@nelsmar


Sent from a secret volcano base using trained sharks

That proves that guy is an idiot torque pro is an obd2 data app you can get real time data and datalog things via a obd2 blue tooth dongle. The dyno feature on it isn't accurate by any means as it is only assuming the horse power and stuff going by data you've input into a "profile". Of course there is a relation between the sport modes though because in order to cut wheel spin off or allow it to happen you have to have control of the accelerator and throttle maps (my basic understanding)

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