Got 1 knock count on Cobb Ap
Jan 28, 2013, 07:17 AM
#1
Evolving Member
Thread Starter
iTrader: (4)
Join Date: Oct 2012
Location: SA, Texas
Posts: 357
Likes: 0
Received 0 Likes
on
0 Posts
Got 1 knock count on Cobb Ap
So I was viewing the knock count on my Cobb ap while drive and it said 1 knock count. Is this bad? I'm not too sure what this means exactly? Thanks
Jan 29, 2013, 02:06 AM
#6
Could be a possibility but I highly doubt it. The chatter could be from the transmission, though.
R u tuned on the Cobb OTS maps? Running too rich could also cause knock. The ots maps r rich as hell, I know coz Im using Cobb AP. I'm Using their maps as a base, but I'm tuning it so the afr isn't as rich as their OTS maps. Their OTS maps r running at 10-10.5 afr.
U gotta remember, OTS maps r made to cover a wide array of cars and they have to be on the safe side of the tune...that's why they make the afr so rich.
R u tuned on the Cobb OTS maps? Running too rich could also cause knock. The ots maps r rich as hell, I know coz Im using Cobb AP. I'm Using their maps as a base, but I'm tuning it so the afr isn't as rich as their OTS maps. Their OTS maps r running at 10-10.5 afr.
U gotta remember, OTS maps r made to cover a wide array of cars and they have to be on the safe side of the tune...that's why they make the afr so rich.
Last edited by Panda_stunter; Jan 29, 2013 at 02:10 AM.
Jan 29, 2013, 08:55 PM
#7
Evolving Member
Thread Starter
iTrader: (4)
Join Date: Oct 2012
Location: SA, Texas
Posts: 357
Likes: 0
Received 0 Likes
on
0 Posts
Could be a possibility but I highly doubt it. The chatter could be from the transmission, though.
R u tuned on the Cobb OTS maps? Running too rich could also cause knock. The ots maps r rich as hell, I know coz Im using Cobb AP. I'm Using their maps as a base, but I'm tuning it so the afr isn't as rich as their OTS maps. Their OTS maps r running at 10-10.5 afr.
U gotta remember, OTS maps r made to cover a wide array of cars and they have to be on the safe side of the tune...that's why they make the afr so rich.
R u tuned on the Cobb OTS maps? Running too rich could also cause knock. The ots maps r rich as hell, I know coz Im using Cobb AP. I'm Using their maps as a base, but I'm tuning it so the afr isn't as rich as their OTS maps. Their OTS maps r running at 10-10.5 afr.
U gotta remember, OTS maps r made to cover a wide array of cars and they have to be on the safe side of the tune...that's why they make the afr so rich.
Trending Topics
Feb 1, 2013, 08:20 PM
#10
You're fine man. Really 3 and under is fine if it's just randomly...
Typically it's what's called "phantom knock", the knock sensor senses vibrations in the engine assembly if something it out of whack it triggers the knock sensor... Not only that but a lot of "good" tuning software will have an alternate safer ignition and fuel map. At a certain moment if knock ever goes over a certain threshold it will switch to the alternate safer maps until the knock has subsided.
Typically it's what's called "phantom knock", the knock sensor senses vibrations in the engine assembly if something it out of whack it triggers the knock sensor... Not only that but a lot of "good" tuning software will have an alternate safer ignition and fuel map. At a certain moment if knock ever goes over a certain threshold it will switch to the alternate safer maps until the knock has subsided.
Feb 26, 2013, 08:07 AM
#12
Newbie
Join Date: Dec 2012
Location: canada
Posts: 5
Likes: 0
Received 0 Likes
on
0 Posts
i just logged my car and seems like if i do a second gear pull then i get knock ( 1-4 ) but if i do a third gear or fourth seems like there is alot less knock. is this common?... newbie here
Apr 7, 2013, 01:49 AM
#13
^
On your 3rd or 4th gear pulls if you are 3 or less you are ok. I know before on my old evo 8 3 and up and the ecu pulls timing, lowers boost, and richens up the afr's until knock goes away. Not sure how it is for the newer X's, I just recently got one myself. Maybe same thing still?
On your 3rd or 4th gear pulls if you are 3 or less you are ok. I know before on my old evo 8 3 and up and the ecu pulls timing, lowers boost, and richens up the afr's until knock goes away. Not sure how it is for the newer X's, I just recently got one myself. Maybe same thing still?
Apr 7, 2013, 12:24 PM
#14
Evolving Member
Good thread.
I see knock between 1-3 on hard WOT pulls sometimes. Doesn't happen on repeated logs at the same rpm range. Definitely seeing 1 count of knock isn't something to worry about. Most likely it is road vibration or shifting vibes.
I see knock between 1-3 on hard WOT pulls sometimes. Doesn't happen on repeated logs at the same rpm range. Definitely seeing 1 count of knock isn't something to worry about. Most likely it is road vibration or shifting vibes.
Thread
Thread Starter
Forum
Replies
Last Post