Lexus ISF / IS-F / LFA / LF-A  Forum banner

1 - 17 of 17 Posts

·
Registered
Joined
·
29 Posts
Discussion Starter · #1 ·
Anyone here pull their ECM yet for AEM piggyback or otherwise? If so PLEASE post a high res picture of your ECU cracked open! I'd love to get an idea of the chips used.

Beyond the down payment, I haven't even made my first monthly payment yet so I'm reluctant to start digging for my ECM and opening things up :(

My goal as you could assume, is to at some point crack the stock ECU for tuning. Many have tried, all failed and there is a high chance I won't make much progress.

I have a background in tuning coming from the Subaru world. I've got (one class remaining) a masters in computer science focusing on things such as compiler technologies and combined with my experience in reverse engineering binary data I might have a chance.

Hell, I even wrote my own software suite for ROM editing and ECU logging.
simpletuneDOTorg (I'd post the URL, but I don't have the post count to do so yet)

The reason I need an idea of what chips are involved with our ECUs has to do with what doors are opened for ROM flashing. JTAG is often available for chip flashing. Subarus use Renesas chips which include their own custom means for flashing as well in addition to flashing over ODB2.

Also, reading the ROM from the ECU for purposes of cracking the checksum algorithm is important as well.

I'm not full of hot air but a realist... perhaps I'll get lucky... or I'll open the doors for someone more experienced than I to take the reigns.

So, anyone have some pics?

Thanks,
-Eric-
 

·
LexusF.com SPAM Police
Joined
·
689 Posts
Whatever you just said...I'm in.

I think [email protected] has opened it up. If I remember right they offer a piggyback unit that they are going to use on Splat's car for the S/C application. You might want to contact him.
 

·
Registered
Joined
·
29 Posts
Discussion Starter · #3 ·
Whatever you just said...I'm in.

I think [email protected] has opened it up. If I remember right they offer a piggyback unit that they are going to use on Splat's car for the S/C application. You might want to contact him.
Thanks, good idea.

Perhaps they (or someone else) have a ECU sitting around from a scrap yard. If I could get something like that in hand I might have a better shot... since most importantly I need to make it to work even if I toast something ;)
 

·
LexusF.com SPAM Police
Joined
·
689 Posts
do a search for crashes on this site. I know of a couple and one that just happend within the last couple of weeks that were posted on here. Maybe you could contact the OP's of those and see if they are willing to make a trip to the junkyard and get their ecu for you.
 

·
Registered
Joined
·
29 Posts
Discussion Starter · #6 ·
Thanks, good idea.

Perhaps they (or someone else) have a ECU sitting around from a scrap yard. If I could get something like that in hand I might have a better shot... since most importantly I need to make it to work even if I toast something ;)
I have no problem being a vulture. Good idea.
 

·
Premium Member
Joined
·
1,127 Posts
Interesting. Good luck.
 

·
Registered
Joined
·
191 Posts
Welcome to the forum and congrats on the new ride Tgui. I was actually over at MACHV today getting another baseline dyno done there and he told me that you left the Subi for an IS-F.
 

·
Registered
Joined
·
222 Posts
Nice to see someone trying to get something done, in for the updates! And thanks to Andy for offering to take the pics!
 

·
Registered
Joined
·
29 Posts
Discussion Starter · #12 ·
Welcome to the forum and congrats on the new ride Tgui. I was actually over at MACHV today getting another baseline dyno done there and he told me that you left the Subi for an IS-F.
Thanks! Thats funny how word spreads around here. I was actually going to drive up today to surprise Dan! Ohhh well :p
 

·
Registered
Joined
·
29 Posts
Discussion Starter · #13 ·
If you can do what colby has done for ecuflash, or hamish has done for evoscan, that would be awesome. I'm coming from the evo world btw..
I'd love to do something like colby/hamish. Once again, I'll do what I'm able and if I get stuck I hope my efforts can be built upon by others.
 

·
Registered
Joined
·
19 Posts
wow I just realized there are several members in NoVa. I just picked up my 2010 yesterday(literally just hit 190 miles woot!!). I would LOVE to see a nice flash option available for this car soooooo tgui if you need any help I'll do what I can. I've tuned quite a few other cars(used to own a shop) and I'm now a software engineer.

-B
 

·
Registered
Joined
·
194 Posts
Jesus Cayman you get your stuff from Dan also, lol. Small world i miss the suby community but thats what the forums and autocross is for. As for the ECU i know Andy can help as stated but Tgui i can probably get you some shots Monday from Janoy. I know he stated he was looking into what you are doing. That is going to the source of the parts for the code, instead of trying to get past lexus. ;)
 

·
Registered
Joined
·
29 Posts
Discussion Starter · #16 ·
wow I just realized there are several members in NoVa. I just picked up my 2010 yesterday(literally just hit 190 miles woot!!). I would LOVE to see a nice flash option available for this car soooooo tgui if you need any help I'll do what I can. I've tuned quite a few other cars(used to own a shop) and I'm now a software engineer.

-B
Cool! You have any experience with IDA Pro, C/C++ dev, assembly, gcc?
 

·
Registered
Joined
·
29 Posts
Discussion Starter · #17 ·
Jesus Cayman you get your stuff from Dan also, lol. Small world i miss the suby community but thats what the forums and autocross is for. As for the ECU i know Andy can help as stated but Tgui i can probably get you some shots Monday from Janoy. I know he stated he was looking into what you are doing. That is going to the source of the parts for the code, instead of trying to get past lexus. ;)
Thanks, shots from multiple people would be nice to see any differences in chips used over the months/years. As long as I can make out the writing on the chips I'll be happy!
 
1 - 17 of 17 Posts
Top