Turbonator SBECII (T1)

[ShelGame]

I'm about 75% done with my dis-assembly of the '92+ T1 code and thought I'd start a thread to see how much interest there was in a Turbonator version. How many of these cars are still out there anyway? Can't be many, right?

The code, by the way, is a PITA. It's totally different from anything before it. There are no more P/T, WOT, Idle tables. There is only 1 fuel surface, then modifiers for idle and WOT. Timing is a little different in that idle and off-idle are different. But then, WOT timing is a modifier to the off-idle (ie, P/T) timing.

The boost control is all new, there's a new type of 3D table that I don't understand yet, and much more I'm sure. I want to finish the dis-assy at least because there are some interesting ideas in there that I might want to incorporate somehow into a 'master' codebase for SMEC/SBEC/SBECII - someday, sigh...

[ShelGame]

Wow, so like no interest at all...

[bakes]

That's because we are a waiting for a 3.ol turbo cal LOL

[1BADVAN]

i have no need or interest in a sbec 2 cal but i too am interested in what things it has that we could incorporate into the other styles

[turbovanman²]

What year was SBEC II?

I think most are waiting for turbo 3.0L cals and TIII stuff.

[cordes]

What year was SBEC II?

I think most are waiting for turbo 3.0L cals and TIII stuff.

It was 92'

[ShelGame]

What year was SBEC II?

I think most are waiting for turbo 3.0L cals and TIII stuff.

TIII stuff is basically done. That's why I'm moving on to the next thing. The SBECII and Mexican cals are on the list well before anything turbo 3.0...

[zin]

I'm always interested in new stuff! I'm imagining that the new code is a result of higher computational power of the newer computers, I would expect that the new code can more closely monitor/control the engine, all the better if it can be bent to our "will"!

Mike

[ShelGame]

I'm always interested in new stuff! I'm imagining that the new code is a result of higher computational power of the newer computers, I would expect that the new code can more closely monitor/control the engine, all the better if it can be bent to our "will"!

Mike

The problem with the '92 T2 code, is that it is philosophically different from the earlier code. Where the early code has 3 different tables for idle, p/t, and wot fuel; the '92+ T1 has only 1 (3D) table for all fuel. Then there's a modifier table for WOT. So, tuning it will be fundamentally different from the early code and even from the TIII. The other parts of the code are basically just evolved from the T1 and TIII SBEC code. I can probably learn a thing or 2 from the boost control - it's more advanced than the TIII. But, other than that, I don't see anything in there that will really be all that useful.

The Mexican cals are another story. They have a computer controlled BOV that I want to figure out and adapt to the Turbonator cals. The thing with the Mexican cals is that the code is just more organized, actually. Seems to me to be better thought out. I think a completely different person or group must've coded it because very little is the same as the US cals.

[zin]

The Mexican cals are another story. They have a computer controlled BOV that I want to figure out and adapt to the Turbonator cals. The thing with the Mexican cals is that the code is just more organized, actually. Seems to me to be better thought out. I think a completely different person or group must've coded it because very little is the same as the US cals.

Seems like they wouldn't have to compromise the performance (mpg/hp/drive-ability) to meet EPA standards, they could just concentrate on making it "work" in a logical way, no doubt the Mexican stuff is cleaner code because of it.

I really like the idea of a computer controlled BOV, these mech ones always seem to be 1/2 azz...

Mike

PS Have you ever compared the SBECII code to more modern code, say SRT4? I'm curious if the newest stuff evolved from an older code (SBECII or MEX, etc), or if it was a "clean slate" kind of deal, which tends to be rarer.

[ShelGame]

I believe, though I haven't confirmed it for sure, that the '96-00 or so generation of computers used much of the same logic as the older computers - even though they went to a 16-bit Motorola processor. Some of the 2D tables and lookups, etc. were carried over. But, after '00, I don't know. I think not as it was a completely different computer and no longer designed by Chrysler as I understand it.

[Vigo]

The only sbec2 car i have and plan on modding is my 93 3.3 dynasty. I have an AEM fic for it so the only thing i would REALLY need would be a moved rev limiter. After that, on my not-needed-but-certainly-nice list would be adding timing since 3.3 is non-adjustable.

So if you think the rev limit would be easily found in sbec2 thats the thing i'd be looking for, personally.

[Turbo SOB]

Wait, what?!?!?

'92 TI SBEC-II code disassembly?

DO WANT!!!!!

[Turbo SOB]

Question: Is not the SBEC-II a flashable box, as-is?

[ShelGame]

Question: Is not the SBEC-II a flashable box, as-is?

Some are, at least. I've seen some with the same 87C257 that the SBEC uses...

[Turbo SOB]

Has someone figured out how to flash these, without needing to socket them?

[ShelGame]

Yes and no. I think I know how to do it. But, there's no software yet to do it. The chips they use have a 20V programming voltage that needs to be turned on/off at the appropriate time. It could be done with an FTDI adapter and a step-up voltage regulator. Just need to use the CTS/RTS lines on the FTDI cable to enable the programming voltage. Which requires some new PC-side software.

[ShelGame]

FWIW, I just figured out that the '92+ Mexican T2 cals use nearly the exact same code as the US 2.5 T1 cals. So, I'm finishing both dis-assemblies in parallel.

[Turbo SOB]

Wow, that's awesome.

Dumb question time. Is there any difference in the hardware between the two boxes? That is, can you hook up a charge temp sensor to a TI box, flash a Mexican TII cal onto it and have it work? For that matter, will a TIII box handle a TI or TII cal? Or, even a V6 (3.0, 3.3 or 3.8) box?

[ShelGame]

You should be able to put the SBECII (92+) Mex T2 cal into a T1 SBECII and have it work. From what I've seen, the T1 code already handles the charge temp sensor, it's just that the code is masked out and the tables using it are set to return 0.

The TIII SBECII will run a T1 cal, yes. They're pretty hard to find, too, though.

I believe you can use a 3.0V6 SBECII to run a T1 cal. It has enough injector and coil drivers. I'm not sure if the 3.0 computer will have the knock sensor circuitry, though.

The same way with the 3.3/3.8 SBECII. It has enough injector and coil drivers to run either the T1 or TIII. But, I'm not sure about the knock sensor circuits.