Can any one tell me where your ECU advances timing at WOT ?

When I go to WOT, my timing is at [ stock ] 24 degree's advance and some where after 6000rpm it advances to 26 degree's . My OBDII isnt the greatest and I cant pin point exactly where it advances at .

 

stock timing


i have mapped this 100 times on my car NA


2500 23.4
2750 24.2
3000 25.3
3250 24.2
3500 24.3
3750 24.0
4000 24.0
4250 23.1
4500 21.0
4750 21.0
5000 23.0
5250 20.9
5500 20.7
5750 21.2
6000 21.8
6250 23.8
6500 26.0
6750 26.5
7000 27.0

 

thank you sir

 

Of course the exact advance varies with intake temperature [ambient] and air density [barometric altitude].

The lower the advance that makes the best torque and horsepower is the best advance number.

One needs to data log MAF voltage, injector open time and advance to really see whats happening.

 

yup. this is my average over 6 full runs during the same day and same temp.

this will change for different cars and temp/pressure...

 

I was just trying to get an idea , so my tuner knows that it does advance and the right amount of timing is being pulled at 6500rpm and above . I think Im ordering the Cipher Monday , so we have it on hand when I go to tune

 

...And what about the timing of the rev up engine?
Thanks guys

 

we looked at the stock timing with a SnapOn OBD . And after 6000rpm's the timing kept getting higher and higher . It went from 24 degree's all the way up to 30 degrees on one of the runs . But most of them it went to about 28 degree's

 

As the VE decline from the torque peak rpm the advance should increase -fewer air molecules in cylinder to react [burn]. A good rule of thumb is 1 degree per 500 rpm [obviously this is not right for every engine].......depends on the graph of the air decline vs rpm.

Don't confuse the oem advance as being correct just part of safety software to increase durability.

28-29 degrees at redline is plenty for a 32/24 valve engine....what one wants is to measure the peak cylinder pressure at a rpm and optimize advance so that it occurs at 16-17 ATDC [rod angularity] and 50% of residual mass has burned.

https://dspace.mit.edu/bitstream/172...1/61103821.pdf
https://dspace.mit.edu/bitstream/172...1/61134217.pdf
125 page paper might help