i always thought that the USDM GSR ratios were the same as the JDM Si/SiR ratios but having read some posts now i'm not so sure.. i have taken the figures below from TOVA Asia and so i'm guessing that this guys figures are correct..which means that i have the same F/D as the JDM ITR..will someone please either confirm or disprove them as i have sort of ordered the JDM ITR F/D set up..now i dont know whether i need it or not!!

JDM Si/SiR.................... ITR
1st 3.230....................3.230
2nd 1.900....................2.105
3rd 1.360....................1.458
4th 1.034....................1.107
5th 0.787....................0.845
F/D 4.400....................4.400

 

[QUOTE]i always thought that the USDM GSR ratios were the same as the JDM Si/SiR ratios but having read some posts now i'm not so sure.. i have taken the figures below from TOVA Asia and so i'm guessing that this guys figures are correct..which means that i have the same F/D as the JDM ITR..will someone please either confirm or disprove them as i have sort of ordered the JDM ITR F/D set up..now i dont know whether i need it or not!!

JDM Si/SiR.................... ITR.................JDM ITR
1st 3.230....................3.230..............3.230
2nd 1.900....................2.105..............2.105
3rd 1.360....................1.458..............1.458
4th 1.034....................1.107..............1.034
5th 0.787....................0.845..............0.787
F/D 4.400....................4.400.............4.785

i added the jdm itr to your chart. i'm still trying to figure the gear ratios out as well

 

check out this link, these are the tranny specs i made a table of a while back

http://www.integraspeed.com/tech/trannyguide.html