LexBrett

Hi All;

Is the dial to turn to the right depicted by the green or red arrow in my attached picture? THANKS

bacardi11

iTrader: (1)

that the one and its set on the third setting all done.

NAmVet68

Push the one with the Green arrow in and turn all the way to the right (clockwise) for firmest setting. Easy.

Biggest headache is cleaning up the mating surfaces for the pan gasket (use a NEW gasket or you will be sorry!).

LexBrett

This mod looks very doable. I will have to do this on my back though with ramps and carefully placed jack stands. I assume I need to use OEM Toyota Fluid (WS Grade)? If OEM ATF is not available, do you have any other suggestions? Is it 5 or 6 quarts to refill through the dipstick after dropping the pan? I'll make sure to buy to a new gasket!

toffee123

Any downside or consequence in doing it? Should i understand that by making this adjustment, it won't change the slow throttle response but will making the down shifting a bit quicker?

toffee123

So just turn the green arrow and not to touch the red?

NAmVet68

Yep, just push in and adjust the "Green" screw (it's called the "Primary Regulator Valve" in the diagram), don't mess with the Red valve. According to Talwang's diagram (post #12), that's the lockup control valve....

https://www.clublexus.com/forums/sc-...0-a-650-e.html

Autoplak

I ask toffee's question again as I'm seriously considering this.
Any downside or consequence in doing it?
No tranny noise while driving? Any gas mileage change?
Or just a great positive mod.
I'm torn between that Lexus factory set to soft, however they allow adjustment assuming that firm does no tranny damage.

bacardi11

iTrader: (1)

just do the mod you will have no trouble at all. its all to the good. MPG will go up also.
this is a happy camper mod.

iolmaster

iTrader: (1)

The question Autoplak asks is still valid. If this is such a good mod. Why does Lexus have it in the soft position? Not saying your are wrong. Just would like to know the answer.

bacardi11

iTrader: (1)

they must want the shift as soft as possible this is the thinking of all car companies to get a soft shift the trans must slip only way. a trans that shift fast is better for the trans that's why they have shift kits for all trans. fast shift less ware. most people would not like a shift kit in their cars. I have rebuilt many trans in my day. that's the best ans I can give you. when I raced my vett. it would almost bang in to gear. well done up shift kit.
just so you all know this is not a shift kit mod.

JETII

Is everyone going to the firm or medium setting?

SlvBullet

iTrader: (8)

I did the firm and am happy with the it shifts and feels.

toffee123

I asked and show them the printout of this thread, but the local Lexus dealership refused to do it

bacardi11

iTrader: (1)

toffee
go to your local trans shop and have your trans fluid change and filter and have him do the mod for you. go's to show you the techs no nut thing about it.