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Discussion Starter · #1 ·
Hi guys, I have bought and installed the Apexi RSM, but I have doubts...

How help me for Initial Setting?? :confused:

This is the part of manual where I have problem:





Now, I have a 2002 Celica TS (GTS)

Cylinder Number Setting - Cyl: 4 - Ok? ;)

Speed Signal Pulse Setting - SP1: 4P - Is right? :confused:

Speed Pulse Adjust Setting - ADJ: 100%????? Is right 100%?

Tire Size Diameter Correct - TIRE: what is???
I have a stock tire 205/50/16, what is diameter? What is correction value?
Preceding owner has 103% :confused:
 

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Tire Size Diameter Correct - TIRE: what is???
I have a stock tire 205/50/16, what is diameter? What is correction value?
Preceding owner has 103%
100.8% or 101%

Stock tires on a GT-S are 205/55R15 Overall Diameter: 23.87 in 606.29 mm
The 205/50R16 are a +1 Option Overall Diameter: 24.07 in 611.37 mm

611.37/606.29 = 100.83 %
 

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Discussion Starter · #3 ·
100.8% or 101%

Stock tires on a GT-S are 205/55R15 Overall Diameter: 23.87 in 606.29 mm
The 205/50R16 are a +1 Option Overall Diameter: 24.07 in 611.37 mm

611.37/606.29 = 100.83 %
But what is the factory tire diameter for Apexi RSM?

Because the example of manual is of the Skyline GTR and 225/50/16...:confused:
 

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But what is the factory tire diameter for Apexi RSM?

Because the example of manual is of the Skyline GTR and 225/50/16...
Factory tires 205/55R15 Overall Diameter: 606.29 mm
Current tires 205/50R16 Overall Diameter: 611.37 mm

Correction Value 611.37/606.29 = 100.83 % = 101% for Apexi purposes.
 

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Not being familiar w/the RSM, I'm guessing for actual speed.

EDIT: Per Apexi: Tire Size Correction (For acceleration and timing accuracy.)

Its because the RSM takes its input from the SPD sensor, which gives pulses based on wheel rotation. Tire diameter changes affect distance traveled (speedometer/odometer) per rotation. This correction factor allows the RSM to compensate for such tire diameter changes.
 

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No. You can verify speed w/a GPS if you have one available. Usually the gauge speedometer reads a few km/h high.
 

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:thumbup: You got it.
 
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