BigEvo908

All of a sudden my car started registering 36 counts of knock. The tune on the car was a break-tune for 2.3l stroker, and was fine. It's was done by a credible tuner. . But now when I go past 140 load I get very high knock. I've also noticed that when I log, timing advance is at 30* across the board. regardles of what's in my timing map it's showing 30*. In evoscan and on my op2.0 ad card. I checked for boost and exhaust leaks and fixed the exhaust leaks, I tried to pull timing and it has no effect. Its weird because everything was working fine then one day my CEL for knock started going crazy. Any advice? I don't believe its phantom I believe the high knock is cause of the timing advance. What would cause timing to act that way. I'm tired of an evo driving in vacuum. It's like dating a hot pornstar and only be allowed to go over the blouse.. please help!!

4b11slayer

Possible dieing knock sensor
Or one that isnt torqued.

RightSaid fred

Maybe you've got a loose sparkplug?


What's the last job that was done on the car before it failed?


How long ago was the tune done?


I'd take a guess that (otherwise) the ECU has had it's memory spiked.

BigEvo908

Just did plugs and wires and used the torque wrench.

BigEvo908

It's funny because I did nothing to the car. I was actually doing logs and my clutch was started slipping. I chalked it up to that. I replaced the clutch in it continues to happen.

BigEvo908

Why is my timing advance 30° across the board. I'll post some logs tomorrow as well as my maps. My tune was for a 15psi breakin. I turned it down to 11 psi just to be on the safe side.

BigEvo908

What I mean by 30° timing across the board is from zero load to 150 load throughout the whole rpm it showing time in advance 30°. Why would it do that ? I believe that's the reason I'm having knock.

BigEvo908

High Octane Ignition Map


High Octane Fuel Map


Boost - Set as low as possible. MBC 11psi


Log showing Timing. Notice it doesn't and doesn't match timing map.


Knock

BigEvo908

here is a copy of an evoscan log

BigEvo908

So I've downloaded a stock rom and copied my original Maps over. I was running tephra 7. Flashed it to my ECU. Started up and started to log and noticed my timing was right where it was supposed to be. And once traffic dies down I'll do some logs to test but I believe I resolve my issue. Also I will try to go back to TEphra 7 but i'll download a fresh rom and reflash.

BigEvo908

I feel like I'm talking to myself but I've downloaded the TEPhra 7 phenem fix. Copied my Maps and Settings over. And everything seems fine but the timing. Also before because the timing was pegged at 30° my afrs were going down really low to 9. Now the car is running leaner. I still get knock, not sure if it's the timing or fuel. But I'm gonna leave the timing alone and adjust my fuel accordingly, 12.5 tapering down to 11.5 under ful boost and 11.2 at redline. I'll check the plugs to make sure the knock is real or not if it isn't real I'll adjust my knock sensor filters if it is real I'll pull some timing. Thank you for everyone's input

RightSaid fred

No such thing as knock sensor filters.
It's just more BS that everyone's been fed.

BigEvo908

I've had success adjusting the knock control table. So, I'm not sure what you mean.

gixxer1621

what kind of fuel you running?

RazorLab

iTrader: (8)

Don't listen to RightSaidFraud. He literally spouts nonsense all the time.