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Here's my logs...now what?
Posted: Fri Nov 06, 2009 1:09 pm
by omegagen
I'm using the 91 octCAI tune. I have some LT and ST KNK, but how do I get rid of it?
Thanks guys!!!
RE: Here
Posted: Fri Nov 06, 2009 5:17 pm
by dilky71
what grade fuel are you using? do you have a catch can?
Posted: Sat Nov 07, 2009 9:38 am
by omegagen
BP 93 octane and no catch-can. I'm trying to determine if it's needed. Alot of people say they're "internet folklore" and them alot of people say a catch can is a must.
Posted: Sat Nov 07, 2009 10:33 am
by Quick
How do you plan on determining if it's needed?
Posted: Thu Dec 17, 2009 11:34 pm
by brandy16
No matter what the catch can will keep the intake from getting all gumed up. So its worth it if you love your car like most of us do.
Posted: Fri Dec 18, 2009 1:03 pm
by concoursd
omegagen wrote:BP 93 octane and no catch-can. I'm trying to determine if it's needed. Alot of people say they're "internet folklore" and them alot of people say a catch can is a must.
on a hemi they are a must. on other engines they are kind of folklore. The hemi's have a unique sensitivity to knock and the oil vapors make it a very bad problem. There are numerous posts on just this forum alone of people getting knock with the Stock calibration with only a few thousand miles on their cars.
Be sure to install the catch can AND clean out your intake manifold if you have driven without one aggressively for a few thousand miles.
Posted: Mon Dec 21, 2009 8:53 pm
by cleary524
Once you install the catch can and wait about two months after regular driving. Take a look inside the can...you won't take it off after that. Cheap mod for the $90 it costs.
Posted: Mon Dec 21, 2009 11:32 pm
by HerDaytona
While you are at it I would add about 5% of fuel for now and log again. Fuel and a Catch can sure clean up the tune. It only gets Better from here.
Posted: Sat Dec 26, 2009 12:26 am
by HOTRODD77
HerDaytona wrote:add about 5% of fuel
Through the entire rpm range?
Posted: Sat Dec 26, 2009 8:19 pm
by brandy16
you can add through the entire rpm range but try adding in the range where you got the knock. If you add across the board your adding where you dont need it. So if you got KNK STN at 3800 rpm add 5% fule in the 3000 to 4000 range and data log again to see if it got rid of the knock. Keep adding fule in that range a little at a time until the knock is gone.
Posted: Sat Jan 02, 2010 1:01 am
by Kahler
About the catch can. I have it and its worth it. Go to challengertalk.com forum. There are pages of information about catch can and timing. Thats another thread.