what should my timing advance be?
Apr 29, 2008, 04:52 PM
#17
eg. if map is 10* while logged is 14* your tuning the wrong cell. Go find the 14 that it's reading from.
It does interpolate betwen cells though.
example
your map has the following timing.
2
5
6
and your log says 4.. it's between the 2 and the 5.
Last edited by Mr. Evo IX; Apr 29, 2008 at 04:57 PM.
Apr 29, 2008, 09:22 PM
#20
Just use whatever value makes the most torque without detonation for whatever octane, afr, or boost desired.
If using substandard fuel (i.e. 91 oct), it becomes a challenge beyond my knowledge, but others have mastered it. Just do a search, tons of good threads available on this
If using substandard fuel (i.e. 91 oct), it becomes a challenge beyond my knowledge, but others have mastered it. Just do a search, tons of good threads available on this
I am running 25.5 down to 21 at redline on 91oct. The timing sucks though, 0* at peak torque and about 7-9* at 7500 rpm. EGT's are pretty high too. I am retuning hopefully tommorrow to 23 psi tapering to 21 and see how it goes.
Apr 29, 2008, 10:13 PM
#21
This is what works for me when I tune Evo 8s.
Are you serious?? Or do you mean 10.9-10.8 in the actual map which does not reflect real AFR's via wideband?
Apr 29, 2008, 10:42 PM
#25
Evolving Member
No, using your example.
eg. if map is 10* while logged is 14* your tuning the wrong cell. Go find the 14 that it's reading from.
It does interpolate betwen cells though.
example
your map has the following timing.
2
5
6
and your log says 4.. it's between the 2 and the 5.
eg. if map is 10* while logged is 14* your tuning the wrong cell. Go find the 14 that it's reading from.
It does interpolate betwen cells though.
example
your map has the following timing.
2
5
6
and your log says 4.. it's between the 2 and the 5.
Thanks for the tip!
Apr 30, 2008, 07:03 AM
#28
I've never tuned on 91 octane so I wouldnt know for sure what AFR works best, but if 10.9 washed cylinder walls then there would be dead stock evo's lining the highways since they are 10's or richer from the factory. Not to mention the 100's of Dynoflash tuned Evo's that have super rich fueling.
Apr 30, 2008, 08:08 AM
#29
I am shooting for 23 dropping to 21 or 20.5 at redline and see how the power is.
Apr 30, 2008, 08:11 AM
#30
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so let me see if i understand this you are saying that 10.9 logged from a wbo2 is good for a tuned evo 8? if so i hope and pray you will never tune another evo. last time i checked the accepted and proven afr is 12.0 at spool and 11.5 to redline for maximum power. 10.9 idk wat to even say to that.