Road tune

bleunetizen

Been to my local dyno shop today to tune my friend's 350Z, everything went smoothly and the car gained 30kw at wheels.. It must have been so slow

While I was there I decided to give my Ecu an another go and see if I could improve it any difference but nothing, i could not make any difference really.

No matter what I do, it wont advance more timing, yet it is dead quiet and no sign of detonation, it is no where near the detonation, I think the engine can easily advance 2~3deg+ without any hassle.. except that I CANT GET IT TO ADVANCE ANY FURTHER

Tried everything, playing with knock threshold, knock window, timing high det map, timing main map.

For the 350Z it is really easy, it will advance timing more and more as I tell it to and easy to find out when it would start becoming noisy, and easily find out the limit of the tune and put a slight safety margin from there.

For the 370Z, for the life of me, I cant really advance it once it hits the wall shown in the picture here.

Has anyone got any idea on what to do in search for more power in NA tune?

I wonder if it is affected by VVEL? I can't get a clear information about VVEL tune either..

Attached Images

370z timing.GIF (35.2 KB, 26 views)