Evoscan won't log past a certain load
 

Hey guys,

Have recently done a 50/50 mix of E85 and pump gas in my car. I've upped the boost and for some reason it won't log anything more than 379.8 load in Evoscan

I've changed the 2byte to 1byte load factor in both evoscan and ecuflash to 1.7. That means I should be able to log 255 * 1.7 = 433 load

The rom is tephramod v7 for Evo 7 (90550701). Running a gt3582 turbo at 30psi

Thanks!

It's got me stumped as well. By the way, it's running a maf and it's a 2.3L

Problem is quite simple. And it's not only logging related. There is a limit imposed on "MasterLoad" variable based on current engine rpm. Solution would be to patch that part of code.

Technical details: in that generation of Mitsushi controllers limit was calculated from 2d map of u8 values *8. Max limit would be 255*8 = 2040.
Master load to load_main is converted using formula load_main = MasterLoad * MAF_Size / 65536, where MAF_Size for evo is around 39044. load(%) = load_main * 10 / 32. 2040 * (39044 / 65536) * (10 / 32) ~= 379.8.

I'm quite surprised that you were not stopped earlier at 320% by overload protection fuel cut.

Thanks for your reply

Boost limit/cut is increased to around 640% in Tephra ROM I believe

Also, this thread solved my issue:
https://www.evolutionm.net/forums/ecu...ml#post9302086