If your having knock problems try looking into the throttle tuning, I had some knock issues when I tried a more aggressive throttle table on my g. Reverted it back to a more mild throttle map and things are much better. Funny thing is, my maps running more timing advance seemed to make the knock worse. I tried running booster in my gas to no avail and was getting pretty irritated. I had the mild throttle table flashed back to my tune (ecutek) and it has gone away completely. No knock at all. Give it a try if you are running an aggressive throttle map, might work. Good luck, hope this helps!

 

Yea Seb it still working on this. I looks to be something with G's with AWD he has 2 other cars and their cars are doing the same thing as mine :/. He's got a emails out to ECUTEK

 

I almost got a vert S4 before the G. I fell in love with it, esp the V8 exhaust note But the Timing chain issue steered me away from it. I think it's the tensioners (and cheap plastic guides) but when they break, it's a $8-$12k fix. You have to pull the entire engine out to replace.

 

The S4 is a sedan. You mean the S5 convertible.

The S5 convertible was never available with a V8. It only came with a supercharged 3.0L.

The S5 coupe came with a 4.2L V8 from 08-12 and came standard with the 3L Supercharged in 2013+

 

no :/ They made the S4 as a vert( Coupe) my best friend had one. Now he has a S6 V10!

 

My fault. For some reason i was thinking about only the newer models 2010+

 

Volvo S60 Polestar. Chevy SS. Check those out too. Good luck with your next ride!

(Sorry if you already chose one. I skimmed after reading your OP)

 

How do you know your car is knocking? What are you seeing to know that it is? Are you seeing it when you are data logging? Do you know because you get a flashing CEL? Do you hear the engine knocking?

I'm curious because every once in a while I get a flashing CEL for a brief moment and then it goes away. I use the same Shell station run only 93 octane, BG 44K every oil change. Car runs excellent. Just curious so I can be proactive in the event I run into this issue.

 

Hey man BOTH, I see as high as 7 KR and the light flashes, He's working on it with ECUTEK. We thought the car had issue internal, but after running 100 OCT and him seeing it on two other AWD cars, its not my car.

 

Engine Speed (RPM) Ignition Correction (°) Map Trace Knock (°)
3962.5 -1 -1
4000 -1 -1
4025 -1 -1
4050 -1 -1
4087.5 -2 -2
4125 -2 -2


increases till 6 by 6K

 

so the issue is with ecutek? glad I'm not the only one, I thought my motor was going. I'm just running on less advanced ignition timing maps for now til this gets sorted out. in for results.

 

yes there is, I have buddy here with a AWD and he's going through the same thing. I'm just running a different tune( JohnV) tune till its solved.

Weird cause I only see, 1 count from 3-4k on johns then it goes away (0) Throttle map is not as aggressive tho

 

Well that settles it, no hfc or tune for me. Just leaving it lowered.

 

I really do believe there is a connection between timing and the throttle tables, if they are too aggressive knock becomes an issue. Maybe the motors that open the throttles are not fast enough to respond to aggressive throttle tuning, causing issues with the afr? Idk.... I had the issues with knock same as you but I have a rwd sedan, so I don't think the problem is isolated to awd only. I have a hfc install and tune scheduled with seb next week, I'll talk with him about this issue and see what he thinks.

 

You should honestly sell it and get the Audi you want...that's what you will eventually do so why wait?
I personally am thinking about going back to a Vette...but unsure.