statename

We all know ECU flashing a toyota ecu is not going to happen in north america anytime soon so apiggyback with some nice features is what i am looking for. Options i see so far are:


1. hks350's f-conis experiments were the most promising thing i saw on the forum but it is super proprietary and i was told it has been dropped by hks, as i was trying very hard to get one.

2. mapecu3 very limited in what it can do.

3. sending your ecu away to SARD would cost thousands and would be tuned without your car even there. even more limited because it is a one shot deal.

4. Underdog Racing seems to have developed quite the piggyback for the 1gr-fe. In the write up it says it has the ability to handle extra injectors and vvt. Anyone close to these guys who could check it out? This is the most promising thing i've seen yet as far as tuning for the GR series engine. I'm going to call them tomorrow and check it out but perhaps if they see enough interest from the lexus community they will look at doing something for the 2gr-fse and the 4gr-fe.

http://urdusa.com/store/Electronics-...duct_info.html

5. Monkey Wrench also has a 2GR-FE PNP for the greddy emanage ultimate that i've eyed a few times, but i think i will actively pursue this option again.

http://www.monkeywrenchracing.com/pr...oducts_id=1420

Am i missing anything? Please don't mention vividracing.

TrueStreet

What you're missing is that 2GR-FSE and 4GR-FSE have direct injection, that's what the S in FSE stands for. That's why all the others you mention are FE engines. There is a driver module that is bolted to the engine on the front, as far as I know I think only MoTeC has an ECU that can run the direct injectors, which last time I talked to them they said about $8K for a setup that would work on the IS350. Basically without an extra unit to run the direct injection you can't use any normal aftermarket ECU. I'm sure someone at some point will start providing some nice option do DI cars because the market is shifting towards that and every manufacturer (except FOrd?) has DI on some or a lot of their cars.

edit:

If you're serious. See if KMS has anything that would let run something as complicated as the D4-S system
http://kms.vankronenburg.nl/products...ection-driver/

Or if you 4GR which only has direct injection this could help you
http://www.pe-ltd.com/joomla/
They have something that MIGHT work with DI system.

Also these guys have something for the BRZ/FRS which runs the same fuel type system as the IS350, just two less cylinders, not sure if they have it so that it can run 6+6.
http://elementtuning.com/store/#!/El...ategory=439245

Same with these guys
http://www.kenstoutracing.com/live/

statename

Thanks for the reply I understand the D4 system is not present on the 2gr-fe but it is the closest engine thats being tuned using a piggy back and a toyota ecu i can find. What im really looking for is the ability to alter timing and shifting control AF ratios could be handle by tricking the stock ecu like a MAPECU3 would.

I'll look into the options you posted, but I doubt the FRS/BRZ will be any help. The ecu seems to be flash-able and so i would assume subaru based. Ecutek and cobb both seem to be able to flash it, there is also a freeware option.

As far as the 2GR-FSE I think the 12 injectors (being half DI half regular cant help) is a bigger problem most, ecu solutions only work on 8 injectors not a a problem for the FRS/BRZ since it is only 4 cyl. or the 4GR-FSE since it only has 6 injectors.

statename

also to clarify "SE" That means D4 not "S"

S Swirl intake
SE D-4 Gasoline direct injection

TrueStreet

Adding control for individual pulses isn't an issue since a lot of ECU companies go up to 12 since there are applications where there are those who want to run additional injectors on their engine for different reasons. I talked with element tuning and they said it wouldn't be hard to add more injectors since they have done the research on the D4-S system, but since they doubt many Lexus owners want it they said they wouldn't spend the time reverse engineering the maps needed for a base tune on the 2GR-FSE.

leg3ndary

What's up dude, did you find a solution that worked? I am looking really really hard too. Toyota is a great car for reliability, but ****in hell they're pissing me off right now with the lack of options for this platform!!

leg3ndary

What's up dude. I was looking at the PE solution for the 4GR. I know pretty much nothing about ECUs.

Which solution do you think would possibly work for the 4GR?

http://www.pe-ltd.com/joomla/index.p...mart&Itemid=58

Cheers!

TrueStreet

Only one that for sure would work for your car is MoTeC and last time I asked they said $8K, maybe it's cheaper now, but doubt it.

statename

Sorry for the lack of updates guys. I been talking with a ton of different people from different companies, some helpful some not. Doesnt seem to be too many people out there with real knowledge just a bunch of companies that want to sell plugnplay solutions and as soon as your car isnt on the list and it doesnt look like a quick easy sale they stop talking.

I did find prefabbed wiring harnesses for the 2008 isf at boomslang i have yet to compare all the is350 and isf pinouts but at least the connectors are the same so at worst i have a source for a patch harness good news for the isf guys though

http://boomslang.us/harness-extensio...d=15&trans=all

statename

motec at this point does look like the best solution

skyshadow

It's quite annoying how the ECU for our car is locked. Really puts a hard limit on possibilties.

xvector

what about the Aem Infinity? has anyone tried it?

Gville350

iTrader: (10)

^AEM's website doesn't say anything about the Infinity line being capable of handling two different sets of injectors. Two types of fuels, yes...but nothing about direct AND port injector control abilities like the MoTec system states.