Ping on wide open throttle
Thread Starter
Race Director
Joined: Aug 2002
Posts: 18,254
Likes: 1
From: Deep in the Heart o' Texas
St. Jude Donor '09-'10-'11-'12-'13
Ping on wide open throttle
I searched so if this a 
I apologize profusely. I recently installed a Blackwing, did the idle relearn like I should've, run 93 octane gas. But I still have a bit of pinging on wide open throttle. This is mainly in 1st and 2nd gear. My car is an A4. Not sure what's going on here. Anyone have any ideas?
I apologize profusely. I recently installed a Blackwing, did the idle relearn like I should've, run 93 octane gas. But I still have a bit of pinging on wide open throttle. This is mainly in 1st and 2nd gear. My car is an A4. Not sure what's going on here. Anyone have any ideas?
Melting Slicks
Joined: Apr 2005
Posts: 3,469
Likes: 4
Are you sure it's really pinging? Mine did something similar and I realized that it did it with the AC on but not with it off. Then I opened the hood and determined that the sound seemed to be coming from the belt idler/tensoner thing. I wiggled that around a bit, hit it with some wd40, and no more "pinging". 
Thread Starter
Race Director
Joined: Aug 2002
Posts: 18,254
Likes: 1
From: Deep in the Heart o' Texas
St. Jude Donor '09-'10-'11-'12-'13
I don't believe it's the tensioner as it seems to be tight. It's definitely a pre-detonation ping. I always use the same station for gas and it didn't do this before the Blackwing and idle relearn. Hmmm, maybe it's time for those 3.42's and the performance tune.
Burning Brakes
Joined: Oct 2005
Posts: 924
Likes: 161
From: Atwater CA
2024 C7 of the Year Finalist - Unmodified
Are you sure it's really pinging? Mine did something similar and I realized that it did it with the AC on but not with it off. Then I opened the hood and determined that the sound seemed to be coming from the belt idler/tensoner thing. I wiggled that around a bit, hit it with some wd40, and no more "pinging".
Drifting
Joined: Nov 2003
Posts: 1,539
Likes: 3
From: South al
I have been known to Keep @ Least 2 belts , 1 in the trunk so i dont get stranded ,just in case u have one that comes off , U will lose your Powersteering & the Coolant temps will start to sky rocket
Racer
Joined: Dec 2005
Posts: 431
Likes: 0
From: North Las Vegas Nevada
I did the BW and got some pinging as well. I am in Vegas & elevation is 2000 ft. Not sure if that makes a diff or not. I removed the BW & went with the stock box & Z06 lid with some extra holes drilled out & a K&N. Done! No more pinging. My fog light eclosures are wide open & may play a part. not sure.
Melting Slicks
Joined: Sep 2005
Posts: 2,625
Likes: 1
From: Rhode Island
I did the BW and got some pinging as well. I am in Vegas & elevation is 2000 ft. Not sure if that makes a diff or not. I removed the BW & went with the stock box & Z06 lid with some extra holes drilled out & a K&N. Done! No more pinging. My fog light eclosures are wide open & may play a part. not sure.
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Instructor
Joined: Feb 2003
Posts: 137
Likes: 0
From: North Las Vegas NV
I had the same trouble with the Blackwing. I also tried the stock air box trick, especially in the summer and it did work, but that kind of defeats the point of more airflow. I even tried retarding the timing a bit with my Predator and it did get rid of most of the ping.
I finally ended up with a ChuckCOW tune. Now, Blackwing on and no more pinging.
I would suggest a tune.
I finally ended up with a ChuckCOW tune. Now, Blackwing on and no more pinging.
I would suggest a tune.
Team Owner
Joined: May 2004
Posts: 26,345
Likes: 232
From: SoCal
DH
Tech Contributor
Joined: Apr 2007
Posts: 10,924
Likes: 78
From: Forney Texas
If the re-tune doesn't completely fix it, you might try the Sea Foam treatment. There is much talk about carbon build up in these engines which causes detonation and Sea Foam being an excellent cure. Just do a search on Sea Foam in here. Sea Foam in my tank also cured my fuel sending unit failure issues.
Melting Slicks
Joined: Feb 2001
Posts: 2,803
Likes: 358
From: Northville, MI
If you don't own it, find a friend and borrow their logging software. Run a 15-20 scan and you will find out what the problem is and the best fix. Anything else is just chasing down symptons and not the cause.
