LexoDAV

so i ran the set up with and without the frs torsen LSD, man do i miss it and how strong it holds the ground around the loop. the problem i feel is that the rpms sit a bit high driving regularly. so i will locate a 06-XX is250 Manual trans, which have same final drive gearing. I will attempt to install the is250 final drive ring and pinion gear on the frs diff and reinstall it back on.

LexoDAV

update on the torsen t2 limted slip on the gse3. drives completely like stock. no changes whatsoever. what i did was picked up a m85 is300 manual trans pumpkin, i cleaned it up and slap new seals on it. also a direct fit and works as it was intended. power transfer to the wheels move side to side to the wheel with the best grip. recap. i ditched the frs 4:1 ratio final drive for a m85 3:7 final drive. is it that big of a deal? maybe. but it helps.

Solara350

Good point ! 2014 IS250 only make 204HP LSD isn't necessary, the IS350 do need LSD, any car that makes 300HP+ its good to have one but not really need to if we don't Track Race, 400HP+ yes should have one !
That's why Lexus IS 250/350 don't have LSD Lexus Engineers thought of that ! i've been driven like an a-s-s lately these days to test out New Lexus IS350 suspension and AVS, had the car for awhile now in my opinion i would say Handling and grip is better than BMW 330ix i compared 2015 IS350 Fsport to a 2017 BMW 330ix, i thought 330ix suspension/handling were GOD, Fking same sh't, compare strut vs strut. Guess what i Spun out on track with 330ix. except the Suspension and steering wheel were little stiffer than Lexus in normal Mode but when i turn on SPORT+ on Lexus IS, i like it better the stiffness is just enough like me *****.

Lexus BMW Merc and Audi are Luxury performance, it's not worth to replace the parts with Aftermarket one, you guys are in delusion and imagination. oh i heard its good, oh i think or i feel my handling has improved, save money for Custom Turbo !

TsunamiF

Do you always sputter nonsense when you type?

A performance-centric component like a LSD that can help apply power to the ground under inclement weather or enthusiast-driving conditions is a welcome addition, regardless if you're driving a RC-F, IS250/IS350 F-Sport, 1st Gen IS300, or a FRS/BRZ.

Solara350

you mad bro ? Admit it that ur driving a slow car, i can do anything of what u said above while my 350 fsport is 100% OEM , they called it RICER on youtube , ya LSD makes another 100hp lol have fun doing , 204hp with limited slip differential u cool bro lol

TsunamiF

Wow Randy, it's posts like yours that cause other forums to poke fun of the "intellect" on CL...

Show me where I state that I have a 204hp car.

Reading comprehension is a fundamental skill that's obviously not for everyone...

DaveGS4

iTrader: (2)

Guys take the rude personal comments to pm and out of this thread.

allwheels

Nice find on the swap, i would have personally left the 4.10 gearing in it to compensate for the crappy hp output of the 250. But that's just me.

airjordan1

iTrader: (1)

I heard that cusco has a LSD developed for the FRS so I was just curious if that could just be installed instead of the stock frs LSD and like how much better it would improve the IS250s performance as opposed to the stock FRS LSD.

cocamp

One more question, if the 2013 Japanese FR-S complete assembly different from the north American one, meaning will it have the same Y38 LSD?

Bastrd6

I have wanted to swap a more aggressive rear gear into my is200t. Hopefully the same holds true for where the car reads speed from and they didnt update it.

i250s

Hi! New user here and I’m planning on doing this same swap on my 250. I had one question before I started mines , when you removed the axel from the diff did you HAVE to loosen it from the hubs ? Or would it just drop out ? And also any advice on how to loosen the axel from the hub if needed ? Sorry I know this is random but this was the only good info I found on this swap and I was hoping you might be able to help haha