Automatic Transmission

[carbonBLUE]

Originally Posted by kuhlka

-Shifting through the gears is about as fast or faster than me in my STI. Downshifting through multiple gears is slower because the auto has to bump through each gear in sequence. Keep it in sport mode while racing and you won't need to bump down multiple gears.

double tap the down shift paddle and it will skip gears when down shifting

doesnt do it in 6th but will go from 5th - 3rd, 4th - 2nd, 3rd - 1st.

[DJCarbine]

Originally Posted by megancheung

If it's working the way its supposed to all you should have to do is floor the gas pedal. Automatic transmissions sense engine vacuum and sometimes manifold pressure vs. vehicle speed to "automatically" shift into what's called a "forced downshift" If your not getting good passing speed or incline power you may need a transmission adjustment a "kick-down" adjustment. 10 year mechanic.

The land of kickdown cable adjustments/transmission vacuum modulators is past for the most part

Most modern transmissions use data from the ECU to determine (and learn) shift points and when it should do what. Its also controlled electronically and not with a vacuum/kickdown cable. Many times the main ECU is different between manual/automatic models due to the transmission often having its own dedicated programming/control unit.

10 year shade-tree mechanic

[DeOppressorLiber]

@BRZPDX I really don't know the mechanical reason for it happening. Could have been from to many left foot burnouts and launches while the fluid was extremely hot. I have the carpet out and back in the summer I noticed I couldn't do a burnout anymore and down beside my right foot was literally on fire. I haven't put the trans cooler on mine yet. I am also still using the OEM trans fluid. @hexonracing I have been fi for some time now. I just did the TC and VB mods. With both of these being mechanical it shouldn't require any extra tuning. I did have the TC in my car a couple weeks before the new VB. I highly recommend getting them together. By raising the stall, I felt like my car took a little longer to shift because of that. The VB fixed that and will do the same to any car. If you aren't used to driving an AT car that shift hards, it takes some adjustment because it always shift hard no matter the rpm. It does shift harder in the higher rev band but still shifts hard when just driving regularly.

[mid_life_crisis]

Originally Posted by DJCarbine

The land of kickdown cable adjustments/transmission vacuum modulators is past for the most part

Most modern transmissions use data from the ECU to determine (and learn) shift points and when it should do what. Its also controlled electronically and not with a vacuum/kickdown cable. Many times the main ECU is different between manual/automatic models due to the transmission often having its own dedicated programming/control unit.

10 year shade-tree mechanic LOL

Agree completely and I go back to when you could climb in there with the engine to work on it.

[mid_life_crisis]

Seriously hoping that since the VB is a reworked factory unit as opposed to a fresh casting it will be reasonably affordable because it sounds like exactly what I want.
That plus a rear gear swap.

[hexonracing]

@DeOppressorLiber thanks for your information , after you installed VB and TC beside it shift harder what do you feel in term of the performance ? what's the changes ? i'm looking for a solution for my BRZ, my tranny slips alot whiling it's changing gear. : (

[DeOppressorLiber]

@hexonracing are you NA or FI? In regards to these 2 upgrades it made my car alot faster! The higher stall builds boost quicker and the shifting launches the car itself. I have a turbo, so this made huge changes on my car. As far as your trans slipping, this is going to sound crazy but if the fluid is a quart low it can cause that. Not to mention some internal issues like the packs and such. When you say slip, what does the car do when you shift? Like I stated in some of my previous post, I am not a mechanic, but I don't just drop my car off to anyone. I have 2 mechanics, one for the engine and one for my transmission. I stayed under my car with my trans guy for hours and learned a ton of knowledge from him. When I went to pull the car out after installing the VB 2 weeks after the TC, the car revved all the way up 4100 rpm before it started to move. Pushed it back in and he knew exactly what was wrong. Just from swapping those 2 out and draining every bit of fluid possible from both of them to put back in, we ended up putting 3 quarts back into it. There is no way possible to get all the fluid out of the parts but we never imagined it would take 3 quarts.

[sspkris]

Here is how a torque converter works:

• A torque converter is essentially the automatic transmission's equivalent to a clutch. It transfers power from the engine to the transmission. It acts as a fluid coupling connecting engine rotational power to the transmission’s input shaft.
• It multiplies torque from the engine when additional performance is desired. A typical torque converter will have a torque multiplication ratio in the area of 2.5:1. The main point to remember is that all properly functioning torque converters do indeed multiply torque during initial acceleration.
• The torque converter also serves another extremely important function in a car. The engine must be able to connect and disconnect from the differential, so the vehicle can stop moving while the engine is still running and the transmission is in gear. In the case of an automatic transmission, it is the torque converter that performs this connect/disconnect function and allows a car’s engine to idle while it’s in gear.

• Pump or impeller
• Turbine or rotor
• Stator
• Transmission fluid

[sspkris]

SSP, working alongside our partner company, are bringing 2 stages of high performance valve bodies to the market for the A960E platform. These 2 stages will cover a broad range of driving conditions for our customer base. SSP A960E Stage 1 will be a very aggressive street/strip combination focusing on first gear performance. SSP A960E Stage 2 will be focused primarily on strip performance, while bringing attention to very aggressive shifting thru all 6 gears.

Internal valve body modifications:
Heavy Duty Springs
Heavy Duty Valves
Modified Fluid Passages
Heavy Duty Solenoids

[mid_life_crisis]

Originally Posted by sspkris

SSP, working alongside our partner company, are bringing 2 stages of high performance valve bodies to the market for the A960E platform. These 2 stages will cover a broad range of driving conditions for our customer base. SSP A960E Stage 1 will be a very aggressive street/strip combination focusing on first gear performance. SSP A960E Stage 2 will be focused primarily on strip performance, while bringing attention to very aggressive shifting thru all 6 gears.

Internal valve body modifications:
Heavy Duty Springs
Heavy Duty Valves
Modified Fluid Passages
Heavy Duty Solenoids

Prices damnit! Even if they're just preliminary estimates. You're killing us!

[Xabiss]

I really enjoy the automatic in my car and I love how it shifts in sports mode. What I am wondering is if Shiv with OFT will start making some tunes/changes to the automatic transmission. I have read that Ecutek is starting to do some of this. I sure hope OFT start doing this also.

[Thobjo]

How hard would this be to install ?

Is it a DIY or does it need to be done by you guys at SSP?

[DeOppressorLiber]

It doesn't have to be done by SSP. If you know the basics of this transmission you can install both yourself if you have the tools and equipment to get the car up high enough to be able to drop the transmission. Any trans shop can do these 2 upgrades easily. The VB is alot easier and can be done without dropping the trans. Just remember whoever does this, make sure you double check the fluid because you are going to have to add more fluid.

[FastWhite]

To let you all know, prices have been released and posted.


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