James
Well-known member
Ok. This has been an on going problem for a while. For SOMR reason MMCD logger is showing 0-46 counts of knock depending on load. This can be at idle giving it a free rev or under normal cruising condition also during WOT pulls. As it appears on the logger... RPMs go up->knock comes on->timing is cut back to 7-10.
I knew the lifters were super loud. I replaced the knock sensor. I did all of the cheap tricks to get rid of phantom knock. Today I replaced the lifters and it sounds much better. Also driving it feel amazing again. But I hooked up the logger only to see the same things as before. Only difference I see is the timing isn't being set back as much as before (probably why it feels better). During two logs of WOT pulls the most it was set back was 18-22 degrees at 45 counts of knock.
Now I know I can buy a EPROM ECU and chip it to ignore the knock but I don't want to patch the problem I want to fix it.
2g MAF/550cc injectors/SAFC2.
The SAFC is set to +6% low throttle/+9% high throttle.
Low fuel trim- 96
Medium fuel trim-97
High fuel trim-85
Now I know that the high fuel trim is a little low but when I adjusted the SAFC to add more fuel at high throttle and it started breaking up. Thats where I'm at right now.
If you need any other values let me know!
I knew the lifters were super loud. I replaced the knock sensor. I did all of the cheap tricks to get rid of phantom knock. Today I replaced the lifters and it sounds much better. Also driving it feel amazing again. But I hooked up the logger only to see the same things as before. Only difference I see is the timing isn't being set back as much as before (probably why it feels better). During two logs of WOT pulls the most it was set back was 18-22 degrees at 45 counts of knock.
Now I know I can buy a EPROM ECU and chip it to ignore the knock but I don't want to patch the problem I want to fix it.
2g MAF/550cc injectors/SAFC2.
The SAFC is set to +6% low throttle/+9% high throttle.
Low fuel trim- 96
Medium fuel trim-97
High fuel trim-85
Now I know that the high fuel trim is a little low but when I adjusted the SAFC to add more fuel at high throttle and it started breaking up. Thats where I'm at right now.
If you need any other values let me know!
Last edited: