Transmission swap

[Will4362]

So my 2013 civic si is having transmission problems and I am wondering if a the 2006 tsx transmission is able to be swapped out or is there any big differences that I’m not aware of

 

[webby]

So my 2013 civic si is having transmission problems and I am wondering if a the 2006 tsx transmission is able to be swapped out or is there any big differences that I’m not aware of

so the 06 tsx trans will not bolt up correctly to the 9th gen si. A 2nd gen tsx trans will bolt up (2009+). The gear ratios will not be 100% to the tsx, but it's very close.

2nd gen tsx gear ratios -
1st gear - 3.267
2nd gear - 2.040
3rd gear - 1.429
4th gear - 1.073
5th gear - 0.870
6th gear - 0.686
reverse - 3.583
The final drive ratio is 4.764

9th gen civic si gear ratios
1st at 3.267
2nd at 2.040
3rd at 1.429
4th at 1.073
5th at 0.830
6th at 0.647
reverse - 3.583
final drive ratio is 4.76