So I just signed up on Acura's Owners Link and was reviewing the TSX information that is provided therein. Here is a description of the transmissions as shown by Owners Link:

Transmission
TSX Automatic: 5-Speed Automatic with Sequential SportShift,(TM) Grade Logic Control and Lockup Torque Converter
TSX Manual: Optional: Close Ratio 6-Speed Manual with Magnesium Transmission Case

TSX Automatic Gear Ratios
1st: 2.652
2nd: 1.517
3rd: 1.082
4th: 0.773
5th: 0.566
6th: 0.659
Reverse: 2.000
Final Drive: 4.440

WHAAAAAT?!

First of all, how would one shift the AT into 6th gear? And second, with a ratio that is lower than 5th gear, why would one want to?

 

Its a mistake, only 5 gears for auto. This is off of Acuras site:

Gear Ratios TSX Manual
1st 3.267
2nd 1.880
3rd 1.355
4th 1.028
5th 0.825
6th 0.659
Reverse 3.583
Final Drive 4.760



Gear Ratios TSX Automatic
1st 2.652
2nd 1.517
3rd 1.082
4th 0.773
5th 0.566
6th
Reverse 2.000
Final Drive 4.440

 

The 6AT is another one of the Canada-only options, sorry. :P

 

Dang!! That exchange rate gets me every time.

 

is it an overdrive gear? probably not.

 

Both 4 & 5 are OD gears on the AT, as are 5 & 6 on the MT.

 

4 & 5?! both of them?

 

Yup. "Overdrive" means a gear ratio that's higher (numericall lower) than 1.0. That is, the engine input shaft turns slower than the transmission output shaft.

 

as u say, AT has lockup converter, I remember a Chinese car mag said that when u reach a certain speed, AT will release the lockup torque, so it looks like a gear change.

 

something new for me everyday.

 

You learn something new every day.

 

Whoa. deja vu. Or I need an eye exam...