LS460 E85 tune?
06-06-21, 01:00 PM
#16
Intermediate
As for his wheels I can't say for sure, since I don't know the model. But total weight is not what we are worried about when it comes to wheels. Its the unsprung weight that matters. losing 40 lbs wont have the same effect on acceleration as losing 40 lbs of unsprung AND rotational weight. His engine has to work harder to put the power down AND less of the engines power makes it to the ground so its a two fold WHP loss.
06-06-21, 01:06 PM
#17
Instructor
That comment was made 6 months after the video was posted. He says car has diff swap and E85 "NOW" implying that It wasn't when the video was taken. Then he says he'll "have to do another run", Implying that now that he's done some mods he needs to "RUN" it again.
As for his wheels I can't say for sure, since I don't know the model. But total weight is not what we are worried about when it comes to wheels. Its the unsprung weight that matters. losing 40 lbs wont have the same effect on acceleration as losing 40 lbs of unsprung AND rotational weight. His engine has to work harder to put the power down AND less of the engines power makes it to the ground so its a two fold WHP loss.
As for his wheels I can't say for sure, since I don't know the model. But total weight is not what we are worried about when it comes to wheels. Its the unsprung weight that matters. losing 40 lbs wont have the same effect on acceleration as losing 40 lbs of unsprung AND rotational weight. His engine has to work harder to put the power down AND less of the engines power makes it to the ground so its a two fold WHP loss.
06-06-21, 01:43 PM
#18
Lexus Champion
06-07-21, 03:46 AM
#19
Instructor
"2011 LS460 Tuned Exhaust E85 4.08 Diff"
"What did you run , How was the 60 foot traction?" "2.3ish at a 9.1. Either was spinning off the line or getting wheel hop. On Drag radials as well."
Pretty much my same numbers with no tune, stock diff, stock exhaust, not on a drag surface, and with street tires.
06-07-21, 04:08 PM
#21
Lexus Champion
The lift pump still matters, in the F cars it maxes out at around 800hp with a 50% E85 blend at decent PSI on the super kit. You still need to feed the DI pumps and the 8 port injectors. Someone should probably go check if the part numbers for the DI pumps and tank pumps are the same for the 1UR-FSE and 2UR-GSE, if they are we know the limit
06-08-21, 02:02 PM
#22
Intermediate
Do you think the E85/tune was ever optimized to run that high content of ethanol?
"2011 LS460 Tuned Exhaust E85 4.08 Diff"
"What did you run , How was the 60 foot traction?" "2.3ish at a 9.1. Either was spinning off the line or getting wheel hop. On Drag radials as well."
Pretty much my same numbers with no tune, stock diff, stock exhaust, not on a drag surface, and with street tires.
"2011 LS460 Tuned Exhaust E85 4.08 Diff"
"What did you run , How was the 60 foot traction?" "2.3ish at a 9.1. Either was spinning off the line or getting wheel hop. On Drag radials as well."
Pretty much my same numbers with no tune, stock diff, stock exhaust, not on a drag surface, and with street tires.
06-08-21, 04:18 PM
#23
Lexus Champion
Yep that's the problem with these diff swaps. Our first gear is actually pretty aggressive, so when you add a bunch of power AND lower the gearing it can be very difficult to get a good launch. It most likely effects him out the the 330 ft line and can effect times even more because banging off the limiter with no traction can cause the trans to shift into second too early. I have a stock diff and manage a 2.0 60ft consistently.
06-08-21, 10:50 PM
#24
Not so according to the comments from him: "Car has 4.08 Diff swap and E85 now, Will have to do another run but hoping for 5.0 flat or less."
"You run straight e85? Yes, Tuned for it."
As for the wheels compared to my 19s, what are we talking about in total weight difference, 40-45lbs?
This is his Dragy run I'm referring to: Lexus LS460 L 0-60 1/4 - YouTube
run straight e85??r has 4.08 Diff swap and E85 now, Will have to do another run but hoping for 5.0 flat or less.
"You run straight e85? Yes, Tuned for it."
As for the wheels compared to my 19s, what are we talking about in total weight difference, 40-45lbs?
This is his Dragy run I'm referring to: Lexus LS460 L 0-60 1/4 - YouTube
run straight e85??r has 4.08 Diff swap and E85 now, Will have to do another run but hoping for 5.0 flat or less.
That swap has to be pretty tough to live with if your daily driving ⛽️ Whats it rev @ around 60 and 80mph?
06-09-21, 04:35 AM
#25
Instructor
Yep that's the problem with these diff swaps. Our first gear is actually pretty aggressive, so when you add a bunch of power AND lower the gearing it can be very difficult to get a good launch. It most likely effects him out the the 330 ft line and can effect times even more because banging off the limiter with no traction can cause the trans to shift into second too early. I have a stock diff and manage a 2.0 60ft consistently.
06-09-21, 08:25 AM
#26
I agree the first gear is too long. This is were I miss the 3400rpm peak torque of the 4.3L compared to 4000rpm here. Ive been fortunate to drive a GS460 and really feel how much more nimble that car is despite less power.
https://www.instagram.com/p/BsPqjb3A...dium=copy_link
https://www.instagram.com/p/BsPqjb3A...dium=copy_link
07-17-21, 04:14 PM
#29
Intermediate
Well there is good news! RR Racing just put out that they are starting to look at the 1UR and will offer tunes, the more data they get the better, so contact them for more info.
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stopdrpnro (10-09-21)
07-18-21, 09:21 PM
#30
Intermediate
I'm not trying to be a PITA but I have no clue about tuning a Lexus. A GM I could help you with, but a Lexus...............Not so much (actually, not at all)
Thanks again!