Tuning the GX 460
09-10-20, 10:04 PM
#16
Super Moderator
I saw this mentioned on GXOR:
https://www.facebook.com/groups/8388...796874891&_rdr
"Well ladies and gentleman. I posted about gaining some interested if having TTFS tune the gx460. I decided to do it anyway. All I have is this screenshot of the dyno graph for now.My impression. My truck feels stock again!!!! It’s fantastic, after putting 34” nitto trail grapplers(possibly the heaviest tire on the market) and some steel skids, she was hurting on power. Fuel economy dropped from 19.5 to 14.8 on the highway. Now it’s back up to 17.2 and it feels just as good as it did before the weight and lift. Rest of the power train is bone stock with 55k down to a paper filter.
He was able to extract around 25hp/35tq peak out of it but look at those curves!! There’s a lot of power/tQ “under the curve” that has been found. Throttle response is much better and the transmission tuning is amazing, it’s not hunting constantly and the shifts are much quicker but not harsh, it still drives like a Lexus should.
This is not a substitute for regearing. That’s a totally different aspect of modifying a vehicle.
Remote tuning options are available. If you are local to the DC metro are we can schedule a dyno session or just do a flash tune."
https://www.facebook.com/groups/8388...796874891&_rdr
"Well ladies and gentleman. I posted about gaining some interested if having TTFS tune the gx460. I decided to do it anyway. All I have is this screenshot of the dyno graph for now.My impression. My truck feels stock again!!!! It’s fantastic, after putting 34” nitto trail grapplers(possibly the heaviest tire on the market) and some steel skids, she was hurting on power. Fuel economy dropped from 19.5 to 14.8 on the highway. Now it’s back up to 17.2 and it feels just as good as it did before the weight and lift. Rest of the power train is bone stock with 55k down to a paper filter.
He was able to extract around 25hp/35tq peak out of it but look at those curves!! There’s a lot of power/tQ “under the curve” that has been found. Throttle response is much better and the transmission tuning is amazing, it’s not hunting constantly and the shifts are much quicker but not harsh, it still drives like a Lexus should.
This is not a substitute for regearing. That’s a totally different aspect of modifying a vehicle.
Remote tuning options are available. If you are local to the DC metro are we can schedule a dyno session or just do a flash tune."
09-11-20, 12:22 PM
#17
04-01-21, 12:54 PM
#22
I've been corresponding with OV Tune (vftuner.com), and have verified the $150 "Beta" add pack is indeed an improved tune with significant power over stock. Apparently the factory tune is pig rich to account for the huge percentage of folks Lexus assumed won't consistently run premium gas.
That said, they admitted changes to the transmission controller had yet to be included, which has provided the most dramatic improvements to the Tacoma folks. This weekend, I'm adding the (standard/optional on every other, aka non-US, market's GX, grrrrrr....) transmission cooler and flushing with Valvoline MaxLife ATF in any case and will probably order the tune soon after.
Anyone try it yet?
Edit: Looks like he's removed the 4.6L tune product from their buy page, so guess decided against supporting us? Lies Mat, all lies! Lol.
That said, they admitted changes to the transmission controller had yet to be included, which has provided the most dramatic improvements to the Tacoma folks. This weekend, I'm adding the (standard/optional on every other, aka non-US, market's GX, grrrrrr....) transmission cooler and flushing with Valvoline MaxLife ATF in any case and will probably order the tune soon after.
Anyone try it yet?
Edit: Looks like he's removed the 4.6L tune product from their buy page, so guess decided against supporting us? Lies Mat, all lies! Lol.
Last edited by Leander311; 04-01-21 at 01:52 PM.
04-01-21, 07:30 PM
#23
Driver School Candidate
Well, there is a difference:
The 1UR-FE is based on the 1UR-FSE but lacks the D4-S direct injection technology. Originally used for Lexus vehicles in the Middle East, it was introduced in 2010 in other markets to replace the 2UZ-FE engine in truck and SUV applications. This engine produces 347 hp (259 kW; 352 PS) at 6,400 rpm and 46.9 kg⋅m (460 N⋅m; 339 lb⋅ft) at 4,100 rpm in the Lexus GS and LS. For the Toyota Land Cruiser and Lexus GX the engine produces 304 hp (227 kW; 308 PS) at 5,500 rpm and 44.8 kg⋅m (439 N⋅m; 324 lb⋅ft) at 3,400 rpm.
Lexus GS and LS
347 hp @ 6,400 rpm
339 lb⋅ft @ 4,100 rpm
Toyota Land Cruiser//Lexus GX
304 hp @ 5,500 rpm
324 lb⋅ft @ 3,400 rpm
Tundra
Power: 310 bhp @ 5600 rpm
Torque: 327 lb-ft @ 3400 rpm
Just the RPM differences make up for some it. (H = T x rpm/5252)
I can't cross check if the cams are the same. Due to the change in peak torque/rpm on the GS/LS.
Perhaps that can accomplished with the VVT tuning?
Regardless you would think between the 4.6 and 4.7 there would be enough volume to make some money on this.
I PM'd VF tune for the GX and see what happens.
The 1UR-FE is based on the 1UR-FSE but lacks the D4-S direct injection technology. Originally used for Lexus vehicles in the Middle East, it was introduced in 2010 in other markets to replace the 2UZ-FE engine in truck and SUV applications. This engine produces 347 hp (259 kW; 352 PS) at 6,400 rpm and 46.9 kg⋅m (460 N⋅m; 339 lb⋅ft) at 4,100 rpm in the Lexus GS and LS. For the Toyota Land Cruiser and Lexus GX the engine produces 304 hp (227 kW; 308 PS) at 5,500 rpm and 44.8 kg⋅m (439 N⋅m; 324 lb⋅ft) at 3,400 rpm.
Lexus GS and LS
347 hp @ 6,400 rpm
339 lb⋅ft @ 4,100 rpm
Toyota Land Cruiser//Lexus GX
304 hp @ 5,500 rpm
324 lb⋅ft @ 3,400 rpm
Tundra
Power: 310 bhp @ 5600 rpm
Torque: 327 lb-ft @ 3400 rpm
Just the RPM differences make up for some it. (H = T x rpm/5252)
I can't cross check if the cams are the same. Due to the change in peak torque/rpm on the GS/LS.
Perhaps that can accomplished with the VVT tuning?
Regardless you would think between the 4.6 and 4.7 there would be enough volume to make some money on this.
I PM'd VF tune for the GX and see what happens.
Last edited by BigLClub; 04-01-21 at 07:34 PM.
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Leander311 (04-02-21)
04-02-21, 12:47 PM
#24
Yes! Indeed, the difference in redline accounts for the majority of the power difference, and I suspect was done to help ensure longevity of the 1FE in GX trim with the added stresses of towing (but still - why then no tranny cooler?!?! Grrrr...).
In any case, I'm taking the Wiki info with a grain of salt., esp. because since I've read that very excerpt you've copied/pasted, someone has incorrectly changed our GXs' HP to 304, when we all know it's been 301 for the last decade plus.
But yes, I very much agree on volume/demand. I've 3 friends here just in Austin who'd all pay good money now for a tune... if I could only convince Cobb to start working on Toyotas - they're like 3 miles from me!
In any case, I'm taking the Wiki info with a grain of salt., esp. because since I've read that very excerpt you've copied/pasted, someone has incorrectly changed our GXs' HP to 304, when we all know it's been 301 for the last decade plus.
But yes, I very much agree on volume/demand. I've 3 friends here just in Austin who'd all pay good money now for a tune... if I could only convince Cobb to start working on Toyotas - they're like 3 miles from me!
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ObsidianBl (04-02-21)
04-02-21, 01:19 PM
#25
Driver School Candidate
Well....
If I could only convince Cobb to start working on Toyotas - they're like 3 miles from me!
Perhaps Cobb could "buy out" OV Tunes for the 4.6/4.7 sorta of a win-win for both. $$$
???
Just a thought.
If I could only convince Cobb to start working on Toyotas - they're like 3 miles from me!
Perhaps Cobb could "buy out" OV Tunes for the 4.6/4.7 sorta of a win-win for both. $$$
???
Just a thought.
The following users liked this post:
Slprciv (09-26-21)
04-02-21, 01:57 PM
#26
Super Moderator
Curious about those Wiki edits as well... even the brochures from GCC, Russia, Ukraine, Azerbaijan, Kazakhstan, Vietnam say 292 HP and someone modified to 288HP
Well, there is a difference:
The 1UR-FE is based on the 1UR-FSE but lacks the D4-S direct injection technology. Originally used for Lexus vehicles in the Middle East, it was introduced in 2010 in other markets to replace the 2UZ-FE engine in truck and SUV applications. This engine produces 347 hp (259 kW; 352 PS) at 6,400 rpm and 46.9 kg⋅m (460 N⋅m; 339 lb⋅ft) at 4,100 rpm in the Lexus GS and LS. For the Toyota Land Cruiser and Lexus GX the engine produces 304 hp (227 kW; 308 PS) at 5,500 rpm and 44.8 kg⋅m (439 N⋅m; 324 lb⋅ft) at 3,400 rpm.
Lexus GS and LS
347 hp @ 6,400 rpm
339 lb⋅ft @ 4,100 rpm
Toyota Land Cruiser//Lexus GX
304 hp @ 5,500 rpm
324 lb⋅ft @ 3,400 rpm
Tundra
Power: 310 bhp @ 5600 rpm
Torque: 327 lb-ft @ 3400 rpm
Just the RPM differences make up for some it. (H = T x rpm/5252)
I can't cross check if the cams are the same. Due to the change in peak torque/rpm on the GS/LS.
Perhaps that can accomplished with the VVT tuning?
Regardless you would think between the 4.6 and 4.7 there would be enough volume to make some money on this.
I PM'd VF tune for the GX and see what happens.
The 1UR-FE is based on the 1UR-FSE but lacks the D4-S direct injection technology. Originally used for Lexus vehicles in the Middle East, it was introduced in 2010 in other markets to replace the 2UZ-FE engine in truck and SUV applications. This engine produces 347 hp (259 kW; 352 PS) at 6,400 rpm and 46.9 kg⋅m (460 N⋅m; 339 lb⋅ft) at 4,100 rpm in the Lexus GS and LS. For the Toyota Land Cruiser and Lexus GX the engine produces 304 hp (227 kW; 308 PS) at 5,500 rpm and 44.8 kg⋅m (439 N⋅m; 324 lb⋅ft) at 3,400 rpm.
Lexus GS and LS
347 hp @ 6,400 rpm
339 lb⋅ft @ 4,100 rpm
Toyota Land Cruiser//Lexus GX
304 hp @ 5,500 rpm
324 lb⋅ft @ 3,400 rpm
Tundra
Power: 310 bhp @ 5600 rpm
Torque: 327 lb-ft @ 3400 rpm
Just the RPM differences make up for some it. (H = T x rpm/5252)
I can't cross check if the cams are the same. Due to the change in peak torque/rpm on the GS/LS.
Perhaps that can accomplished with the VVT tuning?
Regardless you would think between the 4.6 and 4.7 there would be enough volume to make some money on this.
I PM'd VF tune for the GX and see what happens.
04-06-21, 06:24 AM
#30
Driver School Candidate
You would think between the GS/GX/LS/4Runner and then the other 50% TUNDRA. That someone would tune for the 4.6 and 4.7.??
Well Googling Tundra Performance shows OV Tune is neck deep in the Tundra 5.7 world. Soooo that is the focus for him right now. $$$
https://www.google.com/search?q=tund...hrome&ie=UTF-8
Well Googling Tundra Performance shows OV Tune is neck deep in the Tundra 5.7 world. Soooo that is the focus for him right now. $$$
https://www.google.com/search?q=tund...hrome&ie=UTF-8