Report: Supercharged Toyota 86 being developed by TRD!!

[catharsis]

Originally Posted by arghx7

Somebody has to crack the ECU before any of that happens.

If the ecu is from subaru it should be cracked shortly by cobb. Scubbie ecu's in the past have been easy to unlock.

[CyberFormula]

[serialk11r]

So I noticed on some other forum arghx[7 here presumably?] wrote that simply increasing port fueling would overheat the direct injectors... Can anyone explain? At high load the direct injectors are the only ones turned on, so fueling would be direct injector limited in this case :O

[arghx7]

Originally Posted by blur

How do you crack an unlocked ECU...

allow me to clarify. What I meant was "disassemble and reverse engineer" the ECU. They have to figure out what all the tables do, even if it doesn't have some actual lock on it.

Originally Posted by serialk11r

So I noticed on some other forum arghx[7 here presumably?] wrote that simply increasing port fueling would overheat the direct injectors... Can anyone explain? At high load the direct injectors are the only ones turned on, so fueling would be direct injector limited in this case :O

Let me preface this by saying that I don't have a crystal ball and I don't know what will happen in the real world when somebody actually tries to crank up the port injectors at full load and high rpm repeatedly. There might be increased wear of the direct injectors in a slow and noticeable fashion. There might be random and catastrophic failures. There may be some negative effect that is difficult to quantify and barely noticeable--negligible in essence.

With all that out of the way, allow me to post the material directly from the source paper on the IS350 2GR-FSE engine:

[serialk11r]

Do you have any idea as to what causes that? I have heard of direct injectors being fired at intake stroke, beginning of compression, or later in compression. If it's later in the compression stroke then mixed fueling would mean less fuel for the direct injector, and that the injector would have less cool down time while the cylinder temperature is high. Injecting more fuel during the end of compression stroke would allow the injector to stay cooler when ignition happens and probably would keep temperature down. The dish guided spray thing seems to suggest injection happening at either beginning of intake stroke or end of compression stroke, the only 2 times you can put fuel in and have the piston near the top.

The problem is I seem to remember being confused about these D4-S articles because there was conflicting information on how the injectors actually operated... At any rate, I have trouble seeing why increased port fueling while keeping the direct injector running the same could cause overheating. More fuel, even through the port, would be expected to lower temperatures across the board I think that article is talking about why they necessarily HAD to run 100% direct injection at higher speed. I guess that brings a second issue though, forced induction would increase cylinder temperatures considerably and 150C sounds pretty easy to hit if they are relying on the fuel to cool it down during the very short time that injection happens in :O

[Homemade WRX]

Sounds similar to urea injection issues that were happening with diesels...deposits and temp regulating. As stated, higher fuel flow will help keep temp down. Then we also can keep in mind for FI that the peak temps are higher but not necessarily as hot as long.

For now it's all speculation to limits, etc. Seems Denso is running higher DI duty cycle because they can't make an injector to take the temps.

[MarkRacerX]

Originally Posted by catharsis

If the ecu is from subaru it should be cracked shortly by cobb. Scubbie ecu's in the past have been easy to unlock.

Be nice to see Cobb Accessport to come!!

I ran Cobb AP on last 3 STi's , great OT reflash and simple!

So will TRD Blower be available in US or GT 86 Japan only?

Exciting stuff!! Esp as this car is like 500lbs lighter than 370Z

[groupb]

the ECU is Toyota- it cannot be reflashed like other car manufacturers

[MarkRacerX]

Originally Posted by groupb

the ECU is Toyota- it cannot be reflashed like other car manufacturers

Well that's no FUN , But all will come with time. Just like Cobb figured out the BMW ecu to crack and run an Accessport. I was just hoping Subaru, since they have many yrs of Exp with those.

Thanks for info!

[Guff]

Originally Posted by groupb

the ECU is Toyota- it cannot be reflashed like other car manufacturers

They announced many months ago that the ECU would be unlocked and easy to modify...

[carbonBLUE]

Originally Posted by Guff

They announced many months ago that the ECU would be unlocked and easy to modify...

i think we are starting to get band wagoners ... lol...

just wait ill people buy an 86 find this forum and try and act like they know everything about it just because they bought one... and ill 1 up them buy telling them ive bought two :P... maybe a second one down the road... im greedy

i wonder if i fly anywhere ill be able to get a 86 to rent while im on business???


but yes UNLOCKED ECU's EVERYONE!!!!

[Guff]

Originally Posted by carbonBLUE

i think we are starting to get band wagoners ... lol...

just wait ill people buy an 86 find this forum and try and act like they know everything about it just because they bought one... and ill 1 up them buy telling them ive bought two :P... maybe a second one down the road... im greedy

i wonder if i fly anywhere ill be able to get a 86 to rent while im on business???


but yes UNLOCKED ECU's EVERYONE!!!!

lol, we should make it our mission to have more than everyone else! Three or four perhaps!

and Thank You for the big sign haha. Hopefully nobody will think twice now...

[carbonBLUE]

Originally Posted by Guff

lol, we should make it our mission to have more than everyone else! Three or four perhaps!

and Thank You for the big sign haha. Hopefully nobody will think twice now...

yeah i think everyone should know by now that it is, theres still a lot of people joining the forum recently as the release date closes in

the ECU is an open platform, many of us know how smart toyota ecus are and what a hassle they are, this is a enthusiast's car, everything about it was built around the average weekend warrior but was also built as a great starting platform for serious race teams

what most people dont know how to tune is BOTH direct and port injection working harmoniously

back on topic, as for a supercharger goes, i hope if there is a need for larger injectors for a TRD supercharger, the only thing we will be changing out would be the port injectors, that is the one advange of having both types of injection.... larger injectors can easily be added tot he ports vs trying to buy overpriced larger direct injectors...

i personally love this engine, i only plan on going maybe 100hp over stock that would put me in power to weight of a 5.0L mustang, which is more than enough for me

[Homemade WRX]

Originally Posted by carbonBLUE

what most people dont know how to tune is BOTH direct and port injection working harmoniously

I don't think it'll be that hard for people once they understand the purpose and strategy that the port injection is used for. I do however foresee some issues in people making large changes with DI...