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.

 

Yeah, his comments are confusing for the timeline. Yep, well versed with rotational mass, that's why I'm running 19x9.5s all around. I wonder why he didn't Dragy run it with the E85 and tune before putting it for sale.

 

In theory yes......

 

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.

 

Stock hi-pressure fuel pump is a beast - direct driven off the camshaft, not an electric motor.

 

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

 

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.

 

Upgrade the traction situation or roll launch it like the dodge guys tend to

 

I was going to say theres no way hes running that 13.8 without the diff swap. Hes shifting into 2nd @30mph and 3rd @ 55mph. That car is quick... Hes needs a Torsen back there at minimum.

That swap has to be pretty tough to live with if your daily driving ⛽️ Whats it rev @ around 60 and 80mph?

 

I feel 1st gear isn't short enough (stock); it's quick off the line but is a bit of a dog until torque is up there around 3300rpm or so.. Even though the GS460 is down about 38hp compared to the LS460 (342hp & 380hp respectively), I believe the GS's half second quicker 0-60 time (5.5 vs. 6.0 according to auto review magazines/blogs actual testing rather than times claimed by Lexus) can be contributed to the "log" style 4 into 1 exhaust manifold design vs. the LS's 2 into 1, as well as being roughly 300-400lbs lighter. My thoughts are that the "log" style manifold benefits the lower end.

 

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

 

Newbie question here but what software do you use to tune our LS460's?

 

someone needs to answer this I want to know too

 

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.

 

Thanks for the info Trey, but I have to ask this again.........what software do you use to log our cars?

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!