OVTUNE says LC and LX ECU Fuel Mapping are identical (2 Viewers)

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40Man

40Man

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I know there has been a lot of talk on this subject. I wrote to OrangeVirus Tuning to see if there was a difference in fuel mapping between the LC and LX, and to see about getting the Harrop Supercharger. OV said that Toyota's have a primary map and a safe map which reduces timing.

Unlike what other "experts" on this forum have stated, the LC and LX ECUs have been unlocked. And OV did confirm that the fuel mapping on the 16 LC and 16 LX are identical.

They also said that running a lower octane using the OEM tune will not likely cause damage due to the conservative mapping.

They also provided that their modified premium tune gets a lot more power than the conservative primary map from Toyota, but it keeps the safe map in place if a lower octane is put in, but only recommend premium fuel if you use their aggressive tunes. They also support mapping for the Harrop Supercharger.

While this may not be definitive proof (as I don't have the actual mapping tables), it is a step towards definitive clarity.
 
Super interesting, thanks for posting this up. I didn't realize there was a company other than HPTuners that offered LC ECU tuning support.
 
Interesting developments going on at OV Tune! I would be interested in their stock tune for the 5.7L if there are gains in MPGs.

I saw 10-15% MPG improvement (highway only) on their Tacoma performance tune. Might have gotten better but I sold the Tacoma before Mat added data logging and tune customization to the included feature set.
 
Does this mean they have a tune coming for LC200 and LX570? and not just Tundra?
 
Great news. I followed their Tacoma-related work quite closely back in the day, and it sure seemed like the OV guy knew his stuff.

Will be very interesting to see his tune for the 200 series, and what sort of results it nets.
 
FYI on the process... it's decidedly not quick, especially as they're actively working on tune development for both the 3UR-FE and Tacoma. The taco seems to be getting most of the love, justifiably based on the numbers. For example, I placed my order at the end of June last year and it took until October before we got far enough along to determine that they couldn't get the base ECU calibration and I needed to send my ECU to them to have it read. Then another couple weeks to get it back. Etc. etc. Each email interaction takes about a week, but it does happen.

My plan was originally to go through the NA tuning process to provide numbers/results to mud, but by the time we were ready to actually start tuning, the Harrop was sitting at my installer's shop, so we proceeded with tuning for the SC. Sorry; it was impossible to wait with that big red crate sitting around... I'm currently doing the back and forth of sending in run logs and waiting for a revised tune. I may post up more when things are dialed in. But yes, the supercharger is awesome, and the stage 1 install did "run fine" with the stock calibration.

You can read through the 80+ pages of crazy on the Tundra forums if you want to see what things are like... DO NOT think or expect that getting a tune through them is going to be fast, painless, or in any way easy. My impression is that the typical 200-series mudder doesn't have the patience for this. However, they are doing really interesting work with a ton of expertise.
 
Great to hear the encryption has been broken. It's incredible Toyota's encryption has withstood time over decades, but this is a huge step towards accommodating aftermarket parts and tunes. Wish the tools would be available to the aftermarket such that the DIY market could have access to take this forward quicker and apply it to a broader set of uses.

In regards to identical timing and fuel maps...it might not be the smoking gun that some are looking for. These ECUs are hugely complex with millions of lines of code. While specific maps may have been revealed and uncovered to be the same, it still does not prove they are identical in behavior. There is abstracted software operating against many trims and variable for which these maps are compounded with to produce actual output. Anyone of which could be an octane or LX toggle. With the federated ECU architecture of the vehicle even further modifying ECM behavior with things like the body ECU, AHC suspension ECU, etc. Plausible but the only sure thing is to follow requirements as documented in the vehicle manuals.

In regards to OVTUNE, I'm intrigued and will dig into that Tundra link @edwardg posted. I have ECU tuning software for several different vehicles and would really like to see what world they have opened up for Yota's. After tuning both aftermarket and OEM ECUs, I find nothing is as reliable as OEM ECUs. Flashing that is the preferred way if possible. Now if there were only tools we could get ahold of...
 
Anyone know if the supercharger's intercooler location would prevent installation of an aftermarket front bumper on a 2011 LX?
 
edwardg said:
FYI on the process... it's decidedly not quick, especially as they're actively working on tune development for both the 3UR-FE and Tacoma. The taco seems to be getting most of the love, justifiably based on the numbers. For example, I placed my order at the end of June last year and it took until October before we got far enough along to determine that they couldn't get the base ECU calibration and I needed to send my ECU to them to have it read. Then another couple weeks to get it back. Etc. etc. Each email interaction takes about a week, but it does happen.

My plan was originally to go through the NA tuning process to provide numbers/results to mud, but by the time we were ready to actually start tuning, the Harrop was sitting at my installer's shop, so we proceeded with tuning for the SC. Sorry; it was impossible to wait with that big red crate sitting around... I'm currently doing the back and forth of sending in run logs and waiting for a revised tune. I may post up more when things are dialed in. But yes, the supercharger is awesome, and the stage 1 install did "run fine" with the stock calibration.

You can read through the 80+ pages of crazy on the Tundra forums if you want to see what things are like... DO NOT think or expect that getting a tune through them is going to be fast, painless, or in any way easy. My impression is that the typical 200-series mudder doesn't have the patience for this. However, they are doing really interesting work with a ton of expertise.
Click to expand...

How are things going?
 
By “fuel mapping” do they also include spark tables? That is more what I’d expect to be different based on octane recommendation, on our engines at least which have the same CR.
 
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Having worked with encryption since 1990's. It is kind of standard thing. How large a key you use is what determines how long something may take to break. Unless by encryption you mean all codes used in mapping of systems themselves which in a way is encryption but more like cypher a - 1. I have always been under alternate assumption that breaking Toyota's encryption was cost issue not a technology issue. How much will it cost to break it. How much can I charge for new map after I broke it. How many people will purchase that product. Ford, Chevy, Dodge, are all selling at least 4X number of trucks as Toyota in Tundra class. The big 3 cross use same pickup engines across a far wider line of vehicles. The money in breaking and selling tunes for Toyota may just not be cost effective venture.
 
So fuel mapping is the same - how about pedal input and throttle response? It appears the Lexus models have slightly more aggressive pedal mapping resulting in less “sluggishness” around town.
 
40Man said:
I know there has been a lot of talk on this subject. I wrote to OrangeVirus Tuning to see if there was a difference in fuel mapping between the LC and LX, and to see about getting the Harrop Supercharger. OV said that Toyota's have a primary map and a safe map which reduces timing.

Unlike what other "experts" on this forum have stated, the LC and LX ECUs have been unlocked. And OV did confirm that the fuel mapping on the 16 LC and 16 LX are identical.

They also said that running a lower octane using the OEM tune will not likely cause damage due to the conservative mapping.

They also provided that their modified premium tune gets a lot more power than the conservative primary map from Toyota, but it keeps the safe map in place if a lower octane is put in, but only recommend premium fuel if you use their aggressive tunes. They also support mapping for the Harrop Supercharger.

While this may not be definitive proof (as I don't have the actual mapping tables), it is a step towards definitive clarity.
Click to expand...
Good info from professional source, Thanks

Kind of figured, one of my post above, TOYOTA would play it on the very safe (conservative) side.
 
Bumping an old thread, OVtune is supported for new LC/LX570.. anyone have any feedback?
 
Brost said:
Bumping an old thread, OVtune is supported for new LC/LX570.. anyone have any feedback?
Click to expand...

I cannot find their vehicle support list, but last I checked(a month or two ago) I didnt see the 2016+ 200 series listed.

I have VFTuner and HPTuners, although I gotta figure out if I can kill off my GX460 VIN and unlock my LX570 vin without paying for the ProTuner upgrade.
 
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