After so many years and still no official Tephra v.7 SD rom for Evo IX GSR - JDM. How did you guys manage to tune those jdm cars?

 

Why not run 8859?

 

I believe that 8859 is for USDM and AUDM . It may also work in EDM.
A tuner tried to tuned my jdm car with 88591715. I have issues like throttle hang, warm start difficulties , driving around is not smooth at all, stalling almost in every stop, check engine for fuel level sensor.....

Can anyone help me?

 

I recently tuned a JDM EVO9 with Tephra, the original ROM on the car was 88570008.
The Tephra ROM I used was the TephraMOD-88580714-v7 and the car is running perfectly.

Give it a try.

 

SeanV does this TephraMOD-88580714-v7 that you used to tune the jdm evo 9 has Speed Density tuning?

 

Still got any tephra v7 for SD ? for JDM EVO9 ?

 

8858 should work.

https://www.evolutionm.net/forums/ec...8586714-a.html