ECU tuning
06-07-12, 01:50 PM
#61
Tech Info Resource
iTrader: (2)
Well, heres the deal. The fact that, 1 the f does not use a body controller, like nissan, and the transmission is a converter, not a twin clutch, and Also it being a 8 speed, doesnt help one bit. But because the f has a tcm and they comminucate through canbus -/+ it shouldnt be a problem. The tricky part will be getting the ems, stock ecm, and tcm to communicate back and forth accordingly, without codes, faults, etc.
For those who are a bit lost, i can try and clarify it a little bit.
Body controllers do exactly what they are named, control body sensors signals, inputs, outputs. Nissan, you can hook up to it with a laptop, and then open trunk, locks, windows, gauges, a/c, radio, horn, etc. Lexus has the body controller intergrated in the ecm. Thats one of the tricky parts.
Communication goes through 2-4 wires back and forth, im not sure how exactly the isf works, but on 18wheeler diesel trucks(my field of work) they communicate through J1939, where the body controller, ecm, tcm, brakes system, and any other intergrated equipment ecms will "TALK" to eachother and keep eachother updated 1000s of time a minute to ensure all is working properly. If one of them was to have a fault, it will automatically tell the others and make sure there is no extra power given out, and togo into limp mode. Dependig on how serious the code is, it will or wont go into limp mode.
So i understand what they are doing and how all works. All we are waiting for now is how to get it all figured out. The fun part lol.
For those who are a bit lost, i can try and clarify it a little bit.
Body controllers do exactly what they are named, control body sensors signals, inputs, outputs. Nissan, you can hook up to it with a laptop, and then open trunk, locks, windows, gauges, a/c, radio, horn, etc. Lexus has the body controller intergrated in the ecm. Thats one of the tricky parts.
Communication goes through 2-4 wires back and forth, im not sure how exactly the isf works, but on 18wheeler diesel trucks(my field of work) they communicate through J1939, where the body controller, ecm, tcm, brakes system, and any other intergrated equipment ecms will "TALK" to eachother and keep eachother updated 1000s of time a minute to ensure all is working properly. If one of them was to have a fault, it will automatically tell the others and make sure there is no extra power given out, and togo into limp mode. Dependig on how serious the code is, it will or wont go into limp mode.
So i understand what they are doing and how all works. All we are waiting for now is how to get it all figured out. The fun part lol.
Good luck, this is going to take a lot longer than you think, and you're going to need lots of good luck to get everything working.
06-07-12, 04:13 PM
#62
Pole Position
Join Date: Apr 2012
Location: Texas
Posts: 223
Likes: 0
Received 0 Likes
on
0 Posts
Well, thats something they will have to figure out. Computers are programmed to do what they are told to do. And you are right, its gonna take time to do it, thats why i am willingto give my car for r&d. Its not my daily, and i have all the time, til tx2k13 
Lobuxracer, thanks for that little bit of info, its something new to me, and i by no means know about the toyota/lexus electrical system. But believe me, i will get this down. The easy or the hard way. Sad thing is i chose the hard way
lol
Lobuxracer, thanks for that little bit of info, its something new to me, and i by no means know about the toyota/lexus electrical system. But believe me, i will get this down. The easy or the hard way. Sad thing is i chose the hard way
lol
06-07-12, 06:55 PM
#65
Pole Position
Join Date: Apr 2012
Location: Texas
Posts: 223
Likes: 0
Received 0 Likes
on
0 Posts
700whp is enough for some good runs. For the big boys, a built isf will be needed, once my 100k warranty is out, that will be done. Even though it may get voided once its boosted thing that worries me is the zf trans. Idk what ts capable of
Been to every tx2k since 2008. I know whats there.
thing that worries me is the zf trans. Idk what ts capable ofBeen to every tx2k since 2008. I know whats there.
06-07-12, 07:28 PM
#66
Pole Position
iTrader: (3)
Join Date: Feb 2011
Location: Texas
Posts: 252
Likes: 0
Received 0 Likes
on
0 Posts
700whp is enough for some good runs. For the big boys, a built isf will be needed, once my 100k warranty is out, that will be done. Even though it may get voided once its boosted thing that worries me is the zf trans. Idk what ts capable of
Been to every tx2k since 2008. I know whats there.
thing that worries me is the zf trans. Idk what ts capable ofBeen to every tx2k since 2008. I know whats there.
06-07-12, 07:58 PM
#68
Pole Position
Join Date: Apr 2012
Location: Texas
Posts: 223
Likes: 0
Received 0 Likes
on
0 Posts
06-07-12, 08:31 PM
#69
Lexus Champion
Join Date: Jun 2007
Location: Aventura, Florida
Posts: 2,148
Likes: 0
Received 0 Likes
on
0 Posts
700whp is enough for some good runs. For the big boys, a built isf will be needed, once my 100k warranty is out, that will be done. Even though it may get voided once its boosted thing that worries me is the zf trans. Idk what ts capable of
Been to every tx2k since 2008. I know whats there.
thing that worries me is the zf trans. Idk what ts capable ofBeen to every tx2k since 2008. I know whats there.
08-11-12, 06:13 AM
#73
Driver School Candidate
Join Date: Jun 2012
Location: MD
Posts: 25
Likes: 0
Received 0 Likes
on
0 Posts
Hey guys, glad to chime in on this thread. I have been talking to a tuner who is very well known for his work here in houston. He has tuned 1400-1500whp lambos, and then have the record for the fastest M3 SMG full interior with no weight reductions. So for the guys who are wondering, there is NOTHING, absolutely nothing out for the F. But we will be sittig down this wednesday and discussing all abou the F, will be data logging, and like every V8, we are going to try and hit a 450-475whp, 50-65whp after a tune. Now for those saying its impossible, look at EVERY V8 engine, and this is what they pull out of it, after a tune. Take all the time in the world, and you will see its true. With this said, after a few weeks, maybe 1K miles or so, we will start discussing, or better yet, make a turbo kit where we use either new exhaust manifolds, maybe going of the sikky design, and try to bolt the if we have enough room, in the rear lower section engine, it wont be an easy task, but it can be done, we will have to design a different pan(maybe) for the returns and and make sure the turbos are high enough for them aswell. Alot of testing, designing and work will be going into my car real soon, but its something i hope to accomplish and give to the Lexus community. Being the 1st tuned F, the 1st 450-475whp F all motor, and hopefully the first to hit 600-650whp and possibly 700whp (if the engine allows 
) with no juice would be a accomplishment. Once all goes down, i will be making a thread, updating as often as possible with any little thing, and try to get datalogs, videos and info out to you guys.
) with no juice would be a accomplishment. Once all goes down, i will be making a thread, updating as often as possible with any little thing, and try to get datalogs, videos and info out to you guys.Yah, sure you will dude. In other news, pigs fly. Talk real big but you ain't got jack for results yet and I'd bet you never will.
08-11-12, 08:06 AM
#74
That being said...I'm also not going to do anything but encourage anybody who is going to take the time to try something that would help out the ISF community...whether they are successful or not.
Internet forums are a great way for people to share information and passion for various things. So far, your few and mostly negative comments on this forum can't be considered as contributions to this forum/community.
08-11-12, 09:12 AM
#75
700whp is enough for some good runs. For the big boys, a built isf will be needed, once my 100k warranty is out, that will be done. Even though it may get voided once its boosted thing that worries me is the zf trans. Idk what ts capable of
Been to every tx2k since 2008. I know whats there.
thing that worries me is the zf trans. Idk what ts capable ofBeen to every tx2k since 2008. I know whats there.