Throttle relative position

Tuning discussion for all first generation Mazda RX-8 (2004-2008)
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moldbruja
Posts: 6
Joined: April 12th, 2020, 12:07 pm

Throttle relative position

Post by moldbruja »

Hi can anyone explain the throttle relative position table, I notice 84 % is the máx value does this mean rx8 never goes full wot?
McTinkerson
Posts: 12
Joined: March 1st, 2020, 8:00 am

Re: Throttle relative position

Post by McTinkerson »

The unit for that table is not really a percentage. Since the RX-8 is drive by wire, it's the stepper motor control value (as pulse width I *think*).

Just like the OMP control.

So 84 is 100%, 42 = 50%, etc.
Far2good
Posts: 1
Joined: August 14th, 2020, 1:46 pm

Re: Throttle relative position

Post by Far2good »

Hopefully someone can help. I have accelerator pedal position @ 100%, Desired throttle position @ 100% and Relative throttle position @ 67.1%. This was with two different throttle bodies thinking that one of them might have been bad. Is relative throttle position @ 67% normal? the actual throttle looks like it opens all the way but this here confusing me.
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Ugnius @ VersaTune
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Posts: 580
Joined: March 19th, 2010, 11:57 am

Re: Throttle relative position

Post by Ugnius @ VersaTune »

Far2good wrote: September 18th, 2020, 10:32 am Hopefully someone can help. I have accelerator pedal position @ 100%, Desired throttle position @ 100% and Relative throttle position @ 67.1%. This was with two different throttle bodies thinking that one of them might have been bad. Is relative throttle position @ 67% normal? the actual throttle looks like it opens all the way but this here confusing me.
What car is that? It is normal. You will not see 100%, because the position sensor cannot reach that. You are seeing the max value reported by the throttle position sensor. The ECU knows that.
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