Stanim
Member
- Thread starter
- #1
Hey Si Enthusiasts,
I purchased the Ktuner for my 10th gen Si some time ago and I want to try out the Full Throttle Shift recently. Here is some of my thought how much RPM to set the rev limiter to if you want a smoother shift.
I am able to calculate the maximum speed for each gear (assuming redlining at 6,500 rpm) based on driving on 3rd gear @ 40mph and rev is very close to 3,000 and using the gear ratio. See the calculated results below.
Gear Speed (MPH) Engine RPM
1 32.4 6,500
2 32.4 3,714
2 56.7 6,500
3 56.7 4,250
3 86.7 6,500
4 86.7 4,875
4 115.6 6,500
From above chart, if you want to do full throttle shift ( by redlining). 1st to 2nd the rev dropped to 3,714. 2nd to 3rd dropped to 4,250, and 3rd to fourth dropped to 4,875. So probably the best rev limiter is to bet set around 4,300 to around 4,400. My current set up is around 4,800 (not 100% smooth when NLS) and i want to give the new setting a try to see the difference.
I purchased the Ktuner for my 10th gen Si some time ago and I want to try out the Full Throttle Shift recently. Here is some of my thought how much RPM to set the rev limiter to if you want a smoother shift.
I am able to calculate the maximum speed for each gear (assuming redlining at 6,500 rpm) based on driving on 3rd gear @ 40mph and rev is very close to 3,000 and using the gear ratio. See the calculated results below.
Gear Speed (MPH) Engine RPM
1 32.4 6,500
2 32.4 3,714
2 56.7 6,500
3 56.7 4,250
3 86.7 6,500
4 86.7 4,875
4 115.6 6,500
From above chart, if you want to do full throttle shift ( by redlining). 1st to 2nd the rev dropped to 3,714. 2nd to 3rd dropped to 4,250, and 3rd to fourth dropped to 4,875. So probably the best rev limiter is to bet set around 4,300 to around 4,400. My current set up is around 4,800 (not 100% smooth when NLS) and i want to give the new setting a try to see the difference.
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