GS300 Budget Rocket
GS300 Budget Rocket
Here is my new 2001 GS300 I purchased this 2 weeks ago it has done 73k Miles and just had a service at Lexus Twickenham.
My plan is to create a little 400bhp rocket but turbocharging it and right now my mind is on keeping the Automatic transmission in place, but will eventually convert it to manual when the novelty of not changing gear wears off and the rest of my conversion is done.
The first step is to replace the ECU and keep all the factory functions intact as far as I can. I want to create a complete plug in solution so anyone can do it
- I will keep the car NA for this step but start to accumulate the parts to convert it to turbo.I plan to use a Borg Warner EFR internal wastegate turbo and retain the standard inlet which should easily see 400bhp with a very large average torque curve making for great little accelerating motor.
Here are some pictures of my car:
![[Image: IMG_3305.jpg]](https://s18.postimg.org/6ycng9oyd/IMG_3305.jpg)
![[Image: IMG_3340.jpg]](https://s18.postimg.org/yzqotyu8l/IMG_3340.jpg)
![[Image: IMG_3375.jpg]](https://s18.postimg.org/noo15lndh/IMG_3375.jpg)
My first step was to see what data the new ECU needed to reproduce to enable the car electronics to function when we removed the original Toyota Denso based ECU:
![[Image: IMG_3403.jpg]](https://s17.postimg.org/f4txvr9pr/IMG_3403.jpg)
I found 3 data streams on the ECU connectors, the top 2 are actually exactly the same, after some investigation the ECU pins are connected to the same PCB track inside the ECU; not sure why but maybe a simple check to see if the ECU is present. Anyway I have identified the this as Toyota Body Electronics Area Network or BEAN
and supports some dash functions and the external temp sensor for the air con. I will use a CAN to BEAN converter to move the appropriate data back onto the car's chassis bus.![[Image: IMG_3440.jpg]](https://s17.postimg.org/gylinnsnj/IMG_3440.jpg)
The other two streams are simple comms data related to the car's traction control system and simply carry the wheel speed information and a few other related values. It will be necessary to reuse this information in the new ECU for the Cruise, Traction and Launch control strategies.
Anyway that's all I have for now and I am sure I have bored you all enough with my first post on this forum
Comments, Suggestions and Corrections very welcome
Hi all first post, thought I would document my little project somewhere and Marc told me about this site a few weeks ago so here I am
Here is my new 2001 GS300 I purchased this 2 weeks ago it has done 73k Miles and just had a service at Lexus Twickenham.
My plan is to create a little 400bhp rocket but turbocharging it and right now my mind is on keeping the Automatic transmission in place, but will eventually convert it to manual when the novelty of not changing gear wears off and the rest of my conversion is done.
The first step is to replace the ECU and keep all the factory functions intact as far as I can. I want to create a complete plug in solution so anyone can do it - I will keep the car NA for this step but start to accumulate the parts to convert it to turbo.
I plan to use a Borg Warner EFR internal wastegate turbo and retain the standard inlet which should easily see 400bhp with a very large average torque curve making for great little accelerating motor.
Here are some pictures of my car:
My first step was to see what data the new ECU needed to reproduce to enable the car electronics to function when we removed the original Toyota Denso based ECU:
I found 3 data streams on the ECU connectors, the top 2 are actually exactly the same, after some investigation the ECU pins are connected to the same PCB track inside the ECU; not sure why but maybe a simple check to see if the ECU is present. Anyway I have identified the this as Toyota Body Electronics Area Network or BEAN and supports some dash functions and the external temp sensor for the air con. I will use a CAN to BEAN converter to move the appropriate data back onto the car's chassis bus.
The other two streams are simple comms data related to the car's traction control system and simply carry the wheel speed information and a few other related values. It will be necessary to reuse this information in the new ECU for the Cruise, Traction and Launch control strategies.
Anyway that's all I have for now and I am sure I have bored you all enough with my first post on this forum
Comments, Suggestions and Corrections very welcome
now thats certainly some insight into the toyota ECU's! they are generally known as an overly complex system so the best results have previously come from just ripping it out and going standalone, but the work you seem to be able to do could be a revolution!
![[Image: LexuS-Copy.jpg]](http://i65.photobucket.com/albums/h204/Sparkystav/LexuS-Copy.jpg)
Read my thread here: The Evolution of my Turbo Lexus from NA-Supercharged-Twin Turbo-Massive Single
Please leave your comments.
Sparkystav
19-07-2023, 11:53 PM #2welcome mate!
now thats certainly some insight into the toyota ECU's! they are generally known as an overly complex system so the best results have previously come from just ripping it out and going standalone, but the work you seem to be able to do could be a revolution!
Read my thread here: The Evolution of my Turbo Lexus from NA-Supercharged-Twin Turbo-Massive Single
Please leave your comments.
Sent from my SM-G920F using Tapatalk
Hey dude. I'll be keeping an eye on this as I plan a manual conversion on my 430 with a charger later down the line. Yhe ECU is always a snagging point as it seems a lot of the systems are interconnecting. I'm keen to see what it is you come up with 😘
Sent from my SM-G920F using Tapatalk
Bring on the ecu revelation...
![[Image: Supra-logo-toyota-supras-119417_1569_512...duxjro.jpg]](http://smg.photobucket.com/user/rob-savage/media/Supra/Supra-logo-toyota-supras-119417_1569_512_zpslqduxjro.jpg.html){kind=logo}
FOSSIL FUELS
20-07-2023, 07:44 AM #6Awesome job..
Bring on the ecu revelation...
RichS11 Dear God I hate my phone. I'm keen on the thread but it should have ended with a 👍.
*hangs head in shame and awaits a barrage of banter......😳😳
Sent from my SM-G920F using Tapatalk
I know we are a nice friendly bunch here at OJC, but I think the rule is, you need to buy a man a beer before you blow him kisses... :gay:
Looking forward to the results. I can turn a laptop on and turn it off again...
RichS11 Dear God I hate my phone. I'm keen on the thread but it should have ended with a 👍.
*hangs head in shame and awaits a barrage of banter......😳😳
Sent from my SM-G920F using Tapatalk
I know we are a nice friendly bunch here at OJC, but I think the rule is, you need to buy a man a beer before you blow him kisses... :gay:
Wayne Looking forward to the results. I can turn a laptop on and turn it off again...Sorry mate, I don't mess about haha.
I know we are a nice friendly bunch here at OJC, but I think the rule is, you need to buy a man a beer before you blow him kisses... :gay:
Sent from my SM-G920F using Tapatalk
Wayne Looking forward to the results. I can turn a laptop on and turn it off again...Sorry mate, I don't mess about haha.
I know we are a nice friendly bunch here at OJC, but I think the rule is, you need to buy a man a beer before you blow him kisses... :gay:
Sent from my SM-G920F using Tapatalk
Jimbob-T-Lex
24-07-2023, 07:16 AM #9mmmm very interesting ill be following this closely mate
I have a Test ECU here now which we think should work with a big except of the Auto Trans which we are still working on, but to test this side of things I am going to install the ECU and program it to just be able to select 1st and reverse so I am move it about, by the time I have this stage don't maybe I will have the electronics for the gearbox strategy done.
I have been away in the USA for a couple of weeks and saw some awesome @JZ stuff over there, I even purchased a cheap Turbo Manifold to fit my Twin Scroll Borg Warner EFR onto
I have a Test ECU here now which we think should work with a big except of the Auto Trans which we are still working on, but to test this side of things I am going to install the ECU and program it to just be able to select 1st and reverse so I am move it about, by the time I have this stage don't maybe I will have the electronics for the gearbox strategy done.
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