Predator tune and engine knock
Thread Starter
Instructor
Joined: Nov 2003
Posts: 159
Likes: 0
From: Aldie VA
Predator tune and engine knock
I know that one of you will be able to answer my question:
About 6 months ago I installed the standard Predator performance tune in my 2003 A4 coupe. I always use premium high test gasoline, right now Sunoco 91 octane. Today going up the fairly steep hill to my house here in the Virginia foothills, I noticed some engine knock. I never noticed it under the stock tune.
Do I need to start using Sunoco 93? Any other ideas?
Thanks!
About 6 months ago I installed the standard Predator performance tune in my 2003 A4 coupe. I always use premium high test gasoline, right now Sunoco 91 octane. Today going up the fairly steep hill to my house here in the Virginia foothills, I noticed some engine knock. I never noticed it under the stock tune.
Do I need to start using Sunoco 93? Any other ideas?
Thanks!
Team Owner
Joined: Apr 2001
Posts: 54,204
Likes: 180
From: S.W. Ohio. . . . . . NRA Life Member
you can try to retard the timing a few percentage points.
But it may be that you simply have carbon buildup (search for "decarb procedure"), or got a bad tank of gasoline.
But it may be that you simply have carbon buildup (search for "decarb procedure"), or got a bad tank of gasoline.
Last edited by Mike Mercury; Apr 19, 2008 at 02:41 PM.
