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ITmushishi · 07-02-2018, 07:42 PM

I've been researching final drive gear swaps -- something like 4.1 to 4.56. As those who tinker with tuning notice the engine is most sensitive to knock in 6th gear (RPM and other things being equal).

It occurred to me that not only will a final drive gear swap give me more torque where I can use it, but it will make the total gear ratio of 6th closer to the pre-swap total ratio of 5th. I think this will allow me to add a little more timing without seeing any more knock in 6th gear.

Anything else you'd adjust in the tune with a final drive gear change?

07-02-2018, 07:42 PM	#1
ITmushishi Member Join Date: Aug 2015 Drives: 2016 FR-S Location: Stockton, CA Posts: 12 Thanks: 0 Thanked 1 Time in 1 Post Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Final drive swap + tune changes I've been researching final drive gear swaps -- something like 4.1 to 4.56. As those who tinker with tuning notice the engine is most sensitive to knock in 6th gear (RPM and other things being equal). It occurred to me that not only will a final drive gear swap give me more torque where I can use it, but it will make the total gear ratio of 6th closer to the pre-swap total ratio of 5th. I think this will allow me to add a little more timing without seeing any more knock in 6th gear. Anything else you'd adjust in the tune with a final drive gear change?