General 680 injectors MAFT and SAFC tuning help please.

[Mits3gts]

I finally got around to installing my pte680's.I am using the maft to get the base set,which should be good.my trims look good at around 110%.I am tuning for 18psi on the evo3 using mostly the safc,now my question is this.
is it normal to richen up the afc at 3-4k then lean it out after that? I was getting hi knock counts in that area(3-4k) but would studder really bad in the upper rpms(rich).heres what my safc looks like now,thanks a lot for the help also i have checked for boost leaks and such,everything seems fine.

lows-all zeroed out(using the maft)

highs-
1k 0%
2k 0%
3-4k 15%
4500 10%
5-7k -10%

 

[Mits3gts]

mods are in my profile,running 15 psi..someone please tell me what needs improvement,i am having quite the time tuning my 680's..thanks


TIMA RPM KNCK INJP O2-R
33° 3313 0 4.10ms 0.68V
32° 3344 0 6.40ms 0.39V
29° 3344 0 7.17ms 0.84V
28° 3406 0 7.94ms 0.86V
26° 3406 0 8.45ms 0.88V
26° 3594 0 9.73ms 0.88V
25° 3594 0 10.75ms 0.88V
22° 3563 0 11.78ms 0.88V
21° 3656 0 13.31ms 0.90V
21° 3719 0 14.08ms 0.90V
19° 3844 0 15.10ms 0.90V
19° 3750 0 15.10ms 0.90V
19° 3906 0 16.13ms 0.90V
18° 3844 0 16.38ms 0.90V
18° 4094 0 16.38ms 0.90V
18° 4156 0 16.38ms 0.90V
18° 4063 2 16.13ms 0.90V
17° 4281 2 16.38ms 0.90V
17° 4188 2 16.38ms 0.90V
17° 4281 1 16.38ms 0.90V
17° 4438 1 16.13ms 0.90V
18° 4531 1 15.87ms 0.90V
18° 4563 1 15.62ms 0.90V
20° 4500 6 15.62ms 0.90V
18° 4563 6 15.62ms 0.90V
18° 4781 6 15.87ms 0.90V
18° 4656 6 16.13ms 0.88V
18° 4844 6 15.62ms 0.88V
17° 4781 5 15.87ms 0.88V
17° 4906 5 15.87ms 0.88V
17° 4938 5 15.36ms 0.88V
17° 5063 5 15.36ms 0.88V
17° 5063 4 15.62ms 0.88V
18° 5156 4 15.36ms 0.88V
20° 5125 5 15.10ms 0.88V
20° 5375 5 15.36ms 0.88V
20° 5313 5 15.10ms 0.88V
20° 5313 4 15.36ms 0.88V
21° 5469 4 15.36ms 0.88V
20° 5531 4 15.36ms 0.88V
20° 5594 4 15.36ms 0.88V
21° 5594 4 15.62ms 0.88V
21° 5625 3 15.36ms 0.88V
22° 5719 4 15.36ms 0.88V
21° 5719 4 15.87ms 0.88V
21° 5813 4 15.87ms 0.88V
21° 5781 4 15.62ms 0.88V
22° 5938 4 15.62ms 0.88V
23° 5906 3 15.36ms 0.88V
23° 5875 3 15.36ms 0.88V
23° 5969 3 15.62ms 0.88V
23° 5969 3 15.62ms 0.88V
23° 6094 3 15.87ms 0.88V
23° 6000 3 15.62ms 0.88V
22° 6000 2 15.62ms 0.88V
22° 6031 2 15.36ms 0.88V
22° 6250 2 15.10ms 0.88V
22° 6313 2 15.62ms 0.88V
22° 6313 3 15.62ms 0.88V

 

[CanadianTSi]

Looks pretty good, I would try adding abit of fuel from 4k on to get rid of that knock.

 

[Mits3gts]

alright thanks alot for the reply,you think if i add the fuel i can turn the boost up some more?just wondering if i have head room with my timing curve..thanks again

 

[Talondsm18g]

You should lean out your highs quite a bit. Im at about -15% on 650's with a fp3052
Try starting there and working down. 680's is a lot of fuel for that turbo. 550's would work much better. What are you using to tune with? Ie logger wideband?

 

[Mits3gts]

i am using a logger,i also posted my log and it seems that i need to add some fuel because i have small counts of knock 4k and up...unless i am getting rich knock..

 

[CanadianTSi]

You should lean out your highs quite a bit. Im at about -15% on 650's with a fp3052
Try starting there and working down. 680's is a lot of fuel for that turbo. 550's would work much better. What are you using to tune with? Ie logger wideband?

He doesn't need to lean it out so much because the MAF-T is already compensating for the Injectors.

Mits3, just tune for no knock. Also it's very unlikely you are getting "rich knock".