RX7 - Front and Rear rotor fuel trims

[Copyninja]

Hi,

How can i add more fuel to the rear rotor to balance out the afrs? Is this possible on the link g4+ ecu?

Thanks

[Adamw]

Turn on individual cyl correction.  You can either do a single value for each rotor or a table for each rotor.  

[Pete_89t2]

11 hours ago, Copyninja said:

Hi,

How can i add more fuel to the rear rotor to balance out the afrs? Is this possible on the link g4+ ecu?

Thanks

Copyninja,

Just curious - your question implies you're able to measure AFRs independently for each rotor, which means you must have dual WBO2 sensors fitted. Is this a turbo or N/A rotary and how/where did you mount the dual WBO2 sensors?

Thanks,

Pete

[Copyninja]

Thank you Adam.

Pete - I dont have dual o2 sensors. However, on the oem lim the runner lengths are not equal and the rear rotors are known to run hotter by upto 10%. If you have EGTS on your exhaust manis for front and rear rotors you'll be able to evidence the rear rotor running a bit hotter. What Adam has confirmed is we can simply run a % of fuel trim to get that rear rotor to balance out with the front. 

20 hours ago, Adamw said:

Turn on individual cyl correction.  You can either do a single value for each rotor or a table for each rotor.  

Thank you for this. 

One last question. With regards to injection timing the base setting for the RX7 13b on the link g4+ is set to 130* BTDC. Any idea if you have an a table for what a starting point should look like?