OTT tune now available for the LC250
- Thread starter jbtaco2002
- Start date
Why would ECU control swaybar?
It's an electronically controlled swaybar. Therefore, the electronic sway bar is controlled by either the vehicle's Electronic Control Unit (ECU) or a dedicated Suspension Control Module (SCM), which functions like a specialized ECU for the suspension system.
SDM is probably controlled by the Body control module via input from Brake, Skid and/or 4x4 module.
ECU is just the engine, that’s not to say it’s not sending and receiving info from other modules but it wouldn’t originate anything other than engine sensors and calibrations (tuning) to manage it.
Lots of computers/modules in these, there are two mirror control units, one for each front door.
While I’d love to see the SDM reconnect speed be able to be modified I understand it won’t likely be very easy. 25 MPH would be nice. Anything above that I think the Yaw gyro should force it to reconnect in the event of a slide event.
I will say it can be quite loud and violent when it auto connects and that would probably get worse with speed.
ECU is just the engine, that’s not to say it’s not sending and receiving info from other modules but it wouldn’t originate anything other than engine sensors and calibrations (tuning) to manage it.
Lots of computers/modules in these, there are two mirror control units, one for each front door.
While I’d love to see the SDM reconnect speed be able to be modified I understand it won’t likely be very easy. 25 MPH would be nice. Anything above that I think the Yaw gyro should force it to reconnect in the event of a slide event.
I will say it can be quite loud and violent when it auto connects and that would probably get worse with speed.
Curious if anyone doing a performance tune truly plans to keep their LC long term. I’ve always imagined that a boost tune shortens engine life, especially on a heavy offroad vehicle with no 0-60 aspirations and a 4 cylinder to boot. Would love some input on what benefits are being sought.
- Jun 8, 2024
- 709
- Media
- 76
- 1,540
- Vehicles
- 2024 Toyota Land Cruiser, 2007 Toyota Tundra 4X4 Double Cab 5.7L V8
I’m seriously considering doing both.
However if I go down the tuning rabbit hole, I will stack the deck in my favor by:
1.) Continuing to perform oil and filter changes at no more than a 5K mile interval.
2.) Stay on top of differential and transmission fluid change intervals.
3.) Explore installing a dedicated auxiliary transmission cooler.
4.) Burn nothing but premium fuel, and probably carry a few bottles of octane booster in a storage compartment to ensure I can boost octane if 91 isn’t available.
From the development notes from OTT it sounds like anything beyond Stage 1 is going to require a larger turbo for meaningful gains, so the mild 30-40 WHP tune without a new turbo is pretty mild. I doubt any noticeable increase in wear will present itself unless you are constantly demanding high engine loads and therefore constantly in boost. If that is the case you are accelerating wear and tear in the stock configuration too.
I’ve been running a tune on our AWD Turbo Volvo since new for almost 17 years and 170k miles. Boost was 6-7 psi stock and just over 15 psi on the tune, in conjunction with a FMIC, intake and downpipe modification to remove a muffler restriction boost tube just prior to the downpipe. Haven’t replaced anything other than the PCV oil trap which lasts around 70k no matter what and of course just changed the entire suspension and engine/trans mounts for the first time at 150k due to wear.
Experimenting with Valvoline restore and protect on it and shorter oil change intervals currently to see if that will extend the PCV system or not? Was burning a small amount of oil prior too which has stopped after just 3k on that oil and MPG is back to when it was new again +5-6 MPG currently so looking good for the Valvoline!
Experimenting with Valvoline restore and protect on it and shorter oil change intervals currently to see if that will extend the PCV system or not? Was burning a small amount of oil prior too which has stopped after just 3k on that oil and MPG is back to when it was new again +5-6 MPG currently so looking good for the Valvoline!
Hopefully the tune will allow user to retain all three modes . Normal , eco , sport.
OP
OP
- Thread starter
- #69
did you get the tune? If so, any feedback? thanksScheduled to get this tune 8/10/25View attachment 43823
Luigi and I got our LCs OTT tuned by JC from Central Coast Tuning together. We both got the enhanced / stage 1 tune. Here’s a quick write up of it from my experiences;
The biggest thing I noticed is the transmission shift points. My LC no longer hunts through the different gears when I city drive, instead it stays in the right gear for longer & in the power-band. The actual shifting in between gears feels much smoother and very much less clunky. Overall a much better driving experience.
Power wise my butt dyno says it’s got more get up & go but my rig is pretty heavy as is so it’s hard to determine. I have no immediate plans on putting the car on a dyno to see the actual difference in gain. I have not perceived any loss or gain in MPG so far with my daily driving habits.
Due to the better overall driving experience, I would definitely recommend this tune to others. Especially if you are a heavier rig on 35s, 37s, and/or have a bunch of steel. I thought the powertrain handled the weight pretty well beforehand, but it handles it even better now.
Attachments
Last edited:
Did you retain the different drive modes ? Does this effect towing ?
Yeah eco, normal, & sport drive modes were retained. I quickly checked each drive mode and do notice a throttle-feel difference in each mode so it's probably not much far off from stock in terms of driving-behavior. I drive almost exclusively in normal mode. As for towing, I can't give you a good answer on that but reach out to JC on their website or instagram & I'm sure he'd be happy to answer any questions on that!
How’s the throttle response on the gas peddle. I feel like the lc is pretty touchy already because of all the low end torque and have read reviews for other OTT that says the driver had to relearn how to drive with the new touchy pedal. I think a more smoothed out transmission system is pretty appealing.
Gas peddle response seems fine to me, I compare it my wife's a90 supra which is also a little on the sensative side. You have to engage it with a purpose, whether you want to be light on the throttle or heavy-footed. Operating it with no confidence and it can be quite jerky. In general the tune has made the drivability much more enjoyable and less "touchy" in my experience.
Does the tune change pedal feel in reverse?
One of the reasons I went with the Banks Pedal Monster is that it leaves reverse alone, ie: factory sensitivity. Something the other pedal modules don’t do. I’m hoping the tune leaves reverse alone. *This is on another vehicle, not the LC.
One of the reasons I went with the Banks Pedal Monster is that it leaves reverse alone, ie: factory sensitivity. Something the other pedal modules don’t do. I’m hoping the tune leaves reverse alone. *This is on another vehicle, not the LC.
Last edited:
Haven’t noticed a difference in reverse but I’m not one to be heavy footed when in reverse gear.
Shaved almost 2sec off the 0-60, color me impressed. I may have to get this. I live at sea level and my LC is basically stock, I know I'm doing 0-60 in better than 9.87sec, much better. As for wear and tear, I don't see how a tune could strain the engine more than some of the stuff you guys are hanging off your LC's 
, unless you are street racing the thing nightly.
For anyone that is lined up to get it, do a 0-60 test before and after. I will if I pull the trigger.
, unless you are street racing the thing nightly.For anyone that is lined up to get it, do a 0-60 test before and after. I will if I pull the trigger.
Last edited:
He will have those numbers with stock tires soon.Shaved almost 2sec off the 0-60, color me impressed. I may have to get this. I live at sea level and my LC is basically stock, I know I'm doing 0-60 in better than 9.87sec, much better. As for wear and tear, I don't see how a tune could strain the engine more than some of the stuff you guy are hanging off your LC's
For anyone that is lined up to get it, do a 0-60 test before and after. I will if I pull the trigger.
Last edited:
Similar threads
