Budget Ecu's

[STATUS]

Well the most likely reason for it is the TCS, or lack of it. As I transplanted this engine into a GT shell, at the time I decided to scrap the traction control as it was going to be a bitch to wire up and I had no use for it. Had been planning on going forward facing anyway, so I would have just had to delete it again anyway.

I wasn't aware at the time that it would cause so much trouble with DTC's. Even with the feedback switched off, the ECU would still pull timing. So after talking with Matt and Pete, I sent the ECU to Matt and he bench tested it and reprogrammed it with a SII Stagea image to get rid of the DTC's. Since then I haven't had it back on the dyno so I never 100% confirmed that this had been the issue, but it didn't once misfire since being reprogrammed, so I think that did sort it out. Then I decided that if I needed to get it back on the dyno anyway, I may as well upgrade to ID1000's and put on the Plazmaman plenum beforehand. And that brings us to now, with an ECU that no longer works

the r34 thats giving me hell on e85 has the plazaman plenum too... it went backwards too. Its fine on 98 but lost lots of mid and same top end as std plenum.

Sounds like you exhausted all avenues.

[The Dan]

We use the GT101 sensor and get a mounting bracket made. Currently CRG are making them for us and we are going to try the Kulig Engineering ones.

If you hit up R33_Racer on the forums here he could possibly give you more information on their kits as we are yet to use it but it's very small and compact.

The ones we use from CRG are larger but so far very stable.

[Don Dada]

Right, just a lil recap.....

Since this thread was started for recommendations for a piggy back ecu for the 1JZ, I thought i'd just keep it here one time....

I have a JDM 2Jzgte vvti auto in an Atisto and have been busting my balls trying to find a simple ecu just to tidy up the afrs and timing with the addition of a wmi kit (only 95 here) and boost up of a few psi. Its going to remain stock turbs, inj etc.

Was also looking for one that would have a boost cut control(clamp) and a speed cut control so I was leaning towards the emanage ultimate. I browsed through the supra fourms and have gotten lots of conflicting reports about the emu so just throwing it up here for advice.

My main concern is timing control and the issue of the stock ecu fighting the emu

So what do you guys think? And any other recommendations without busting the bank?

[Rolls]

Thanks, will have a look into it now

Also...anyone who has used the current wolf ECU's...is there any way of changing the load scale from percentage to a pressure readout?

because to me % of load means nothing

Know this is a really old post but there is good reason for that. Load doesn't equal PSI or anything like that, with a MAF load equals airflow and you can have 10x the airflow at 10psi at 7000rpm than you do at 3000rpm with 10psi, hence the scale is in load.

When using a MAP sensor pressure * temperature is used then scaled in a curve that looks very similar to the torque curve to give you a fairly linear load scale. MAF will always be more accurate as when using MAP you basically have to guess airflow.

Right, just a lil recap.....

Since this thread was started for recommendations for a piggy back ecu for the 1JZ, I thought i'd just keep it here one time....

I have a JDM 2Jzgte vvti auto in an Atisto and have been busting my balls trying to find a simple ecu just to tidy up the afrs and timing with the addition of a wmi kit (only 95 here) and boost up of a few psi. Its going to remain stock turbs, inj etc.

Was also looking for one that would have a boost cut control(clamp) and a speed cut control so I was leaning towards the emanage ultimate. I browsed through the supra fourms and have gotten lots of conflicting reports about the emu so just throwing it up here for advice.

My main concern is timing control and the issue of the stock ecu fighting the emu

So what do you guys think? And any other recommendations without busting the bank?

Piggy back is always a hack and a bad idea, do it once do it properly, just because people make them work doesn't make it a good idea. Get a full aftermarket ECU and piggy back it if needed for other functionality (eg auto etc), however never piggy back the fuel and ignition, it just makes them fight each other making tuning a nightmare.

Can you get a nistune equivalent for supra ECUs? If not adaptronic at ~$1k will be fantastic, tuning is always going to be the bulk of the cost with a full tune from scratch getting close to $1k, if you are just doing small mods a few hundred might be all thats needed to get it up and going.

Edited July 6, 2013 by Rolls

[Don Dada]

Yea I know the gremlins associated with piggybacks but I just cant justify spending that kind of money on a standalone just for a little 'tidy up' of the maps.....Tuning however wouldn't be an issue because it will be done by myself.

Haven't seen anything similar to nistune for these engines either, and the majority of guys who do go standalone go for the fcon vpro wired together with the oem ecu to control the auto box, as I think it also does the vvti.....and I dont think I need to mention tuning for this!

Problem is there is info floating around, most based on the USDM supra, but not the 98 vvti models which either way seem to have problems with the emu, and on the flip side, some say the JDM versions work ok with it .

And there is lots about the aristo with the 2jzgte also, but again the older models without the vvti

Seems like the vvti ecu is a lil sophisticated like the r34, and hence very limited aftermarket tuning options available

Edited July 8, 2013 by Don Dada

[Don Dada]

Need to take the plunge guys.....

Somebody, anybody, everybody.......???