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ECMlink advice or adjustment, to get rid of knock.

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jrdrew5

10+ Year Contributor
508
1
Oct 14, 2009
jacksonville, Florida
just looking for overview slash insight, have no clue what to adjust in order to get rid of the knock. afr's seem good at idle, not good in boost need to turn boost down its to 30psi right now, previous owner. any questions ### ask.

Everything has been verified,
No leaks What so ever Besides coolant cap getting tomorrow,
timing is correct,
no boost leaks or, vac leaks, or exhaust leaks, had to replace all exhaust gaskets, (thank u STM)
ignition system functions fine,
No Rear o2 only front running simulated check box.
Only cel is Evap 0443 cant figure out why, i just clear it.
charging starting sytem functions fine.
__________________
Motor : Ge pistons,eagle rods,100mm crankshaft,all arp hardware, unknown compression ratio.

Head : Gsc3 cams, 1mm oversized valves, cams degreed to 0*, dual valve springs unknown brand, Head ported and polished.
Pte 1000s

exhaust/turbo : fp 3065, Tail wastegate, injen 4 inch intake, 3inch exhaust, thermal r&D Pipe, evo3 exhaust manifold.

Cooling : stock radiator, vrsf intercooler, 3inch piping,
160* thermostat.

Electronics : ecmlink v3, Aem trueboost, Mtx l wideband.
 

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I am not by a computer with link at the moment but I will take a look when I get to the house this afternoon.

In the meantime, have you completed all of the task in this thread. Telling us what you know about each number will greatly improve the quality of advice that you will get as well as the amount of people that will comment. If you provide them with the information they ask for, they will be more than willing to help you.

Just trying to insure that the car is mechanically sound over the interweb:shhh: If you are reading knock, start by turning the boost down and dialing timing back in the cells where the knock occurs. The amount of timing that should be taken out depends on the severity of the knock.

Fill us in with the numbers in the above link and we will get you going. :thumb:

Robert
 
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1000 pte, and they are calculated, just not sure on dead time i am doing a lot of reading here and on ecmlink.

Deadtime affects idle more than anything. That said, your airflowperrev is high and combinedft is low at idle. Try lowering your mafcomp sliders at 0-50hz and see how combinedft and airflowperrev reacts. You could select the first 60sec (idle segment) or so and try mafcompadj tool to get an estimate of where the first few sliders should be...

Using the mafcomp sliders, get airflowperrev in the .25-.30 ballpark and then use deadtime to get combinedft near 0%

All of which is covered in this video:
Fuel Trim
 
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Listening to it from u versus, reading on the link you have shown and ones i have found u made it so much easier ill work on it tomorrow and get back with results.

So even though my motor is a 2.3 am i still shooting for that 25-30 mark?
 
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