Knock problems (boosted)

Martijn_b · 04-09-2019, 08:18 PM

Thanks for your reply. I am using the Link Knock Box to listen to knock. Heres an audio file (when i had knock)
https://drive.google.com/file/d/1pmO...w?usp=drivesdk

I do want to datalog as well to analyze the knock sensor parameters and have requested a map with logging features

Verstuurd vanaf mijn SM-G950F met Tapatalk

HOODEY · 05-11-2019, 10:22 AM

Are you sure the car is knocking?

Martijn_b · 05-12-2019, 07:27 PM

Yes

Verstuurd vanaf mijn SM-G950F met Tapatalk

Martijn_b · 01-16-2020, 03:36 PM

Allright, little update here.

There seems to be an issue with Ecutek after flashing the car, registering abnormal amounts of knock.

At a certain point, I got the tip to unplug the two ECU connectors in the passenger footwell after flashing the ECU with a new file. This helped a lot and removed 80% of my knock.

Right now, the only moment that I have timing retard is when I go in boost in low RPM (say 3000 to 3500). The car doesnt seem to like 12 degrees of timing there (at 6-13 psi). I think it's "lugging" the engine and it pulls like 2-5 degrees of timing depending on various conditions.

I think its a combination between stock high CR + building boost + requested timing - in low RPM's.

I would be interested knowing what timing retard other people run in the 3000-3500 range on stock block and 93 pump.

husam2012 · 01-16-2020, 04:14 PM

Quote:

Originally Posted by Martijn_b

Allright, little update here.

There seems to be an issue with Ecutek after flashing the car, registering abnormal amounts of knock.

At a certain point, I got the tip to unplug the two ECU connectors in the passenger footwell after flashing the ECU with a new file. This helped a lot and removed 80% of my knock.

Right now, the only moment that I have timing retard is when I go in boost in low RPM (say 3000 to 3500). The car doesnt seem to like 12 degrees of timing there (at 6-13 psi). I think it's "lugging" the engine and it pulls like 2-5 degrees of timing depending on various conditions.

I think its a combination between stock high CR + building boost + requested timing - in low RPM's.

I would be interested knowing what timing retard other people run in the 3000-3500 range on stock block and 93 pump.

That is definitely way too much timing. I usually run half of that at that RPM range as it's better to be safe than to throw a rod out of the side.

HOODEY · 01-18-2020, 08:43 AM

Sounds like a case of the tuner not knowing what the car needs.

https://www.ebay.com/itm/Knock-Guard...4AAOSwVYNeHxQ-

Kizmo · 05-20-2021, 06:03 AM

Any News?

04-09-2019, 08:18 PM	#31 (permalink)
Martijn_b Enthusiast Member Join Date: Jan 2018 Location: Netherlands Posts: 280 Drives: 2010 370z MB 6MT Rep Power: 3786	Thanks for your reply. I am using the Link Knock Box to listen to knock. Heres an audio file (when i had knock) https://drive.google.com/file/d/1pmO...w?usp=drivesdk I do want to datalog as well to analyze the knock sensor parameters and have requested a map with logging features Verstuurd vanaf mijn SM-G950F met Tapatalk __________________ Instagram: Boosted_Fairlady Last edited by Martijn_b; 04-09-2019 at 08:22 PM.

05-12-2019, 07:27 PM	#33 (permalink)
Martijn_b Enthusiast Member Join Date: Jan 2018 Location: Netherlands Posts: 280 Drives: 2010 370z MB 6MT Rep Power: 3786	Yes Verstuurd vanaf mijn SM-G950F met Tapatalk __________________ Instagram: Boosted_Fairlady

01-16-2020, 03:36 PM	#34 (permalink)
Martijn_b Enthusiast Member Join Date: Jan 2018 Location: Netherlands Posts: 280 Drives: 2010 370z MB 6MT Rep Power: 3786	Allright, little update here. There seems to be an issue with Ecutek after flashing the car, registering abnormal amounts of knock. At a certain point, I got the tip to unplug the two ECU connectors in the passenger footwell after flashing the ECU with a new file. This helped a lot and removed 80% of my knock. Right now, the only moment that I have timing retard is when I go in boost in low RPM (say 3000 to 3500). The car doesnt seem to like 12 degrees of timing there (at 6-13 psi). I think it's "lugging" the engine and it pulls like 2-5 degrees of timing depending on various conditions. I think its a combination between stock high CR + building boost + requested timing - in low RPM's. I would be interested knowing what timing retard other people run in the 3000-3500 range on stock block and 93 pump. __________________ Instagram: Boosted_Fairlady

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05-11-2019, 10:22 AM	#32 (permalink)
HOODEY Base Member Join Date: Aug 2013 Location: Barbados Posts: 41 Drives: Uk spec 08 350z gt Rep Power: 12	Are you sure the car is knocking?

01-18-2020, 08:43 AM	#36 (permalink)
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05-20-2021, 06:03 AM	#37 (permalink)
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