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Discussion Starter · #1 ·
wat is the final drive of our cars and say if i put a ITR would i loose the ability to still go 140mph? and if so how fast would say my car go, i know iTR top around 140 so i should still be around there with noticable acceleration improvements?
 

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Discussion Starter · #3 ·
well not alot....but i kno i do get up to 120 every once in awhile..., 140 is nothing tho, feels like blah so i wouldn't wanna get rid of it becuase 120 isn't much to me either..i know things are dangerous at those speeds anyways but i still wanna keep the ability of the car to be able to do that....what kinda top speed would i be looking at with the ATS 4.9 final drive give me?
 

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You should still be able to hit 120 mph. One thing to remember is that 5th gear in a ITR is taller than in a Si (0.787 vs 0.848), this makes up for the shorter final drive when cruising in 5th gear.
 

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THis is a comparison to a gs-r but still, same principles.

The JDM ITR 4.785 FD will improve your acceleration dramtically.
As you can see, it will pull a lot harder when compared to that of a SI/b16

most dramatically in 1-3 you will see a noticeable difference. Highway cruising rpm will be somewhere in the 45oo+rpm at 80mph

Here it is:
 

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Discussion Starter · #7 ·
thank you jayman, finally someone with some good info, 140 matters to me becuase top end is important, so basically best thing to do if i want to keep this ability is to get the type r 5th gear to use in conjunction with a final drive, correct?
 
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