Road tune

bleunetizen

ok slowly getting back into it..

after HFC's, the entire A/F went about leaner by about 0.4, maybe this is what contributes to good gain for those cars that do not have the tune, by leaning out the rich stock A/F ratio.

I set mine to 13:1 until 6krpm and 12.5:1 above 6krpm before, after the HFC it became 13.5:1 until 6krpm and 13:1 above 6krpm which is good as it must mean that it can burn fuel more quickly, meaning more power once more fuel is added.

What kind of ignition timing do you guys run after the tune in general? of course it will vary between cars but there must be some generic number with similarly shaped curve. I will tidy up my fuel map again and post it up.

Also, my A/F ratio stays even for both bank A and B after the trim was adjusted? It has been quite some time since it was done and still even on both sides. will keep testing.

bleunetizen

update, the attached pic shows the current log, running stock timing with only AFR set to 13:1~12.5:1.

I have not touched the fuel compensation map, only lowered the cylinder trim slightly and it matches up with the target AFR pretty nicely. the base fuel schedule went up slightly, probably why it is running less timing as the map is telling the car to run less timing.

anyone wanna share the ideas of their ignition timing maps?

I read from some post saying that with the new VHR timing compensation unlocked by uprev, the guys could run 32deg or something and gained like 10hp extra, I wonder what kind of curve I should expect.. the car is running 98ron fuel.

Attached Images

log_afterHFC.JPG (162.7 KB, 28 views)