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ECMlink Is My MAFComp Adjusted Correctly

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bo0st

10+ Year Contributor
835
24
Jan 26, 2010
Phoenix, Arizona
So just curious to see if my MAFComp is how it should be.

All I did was drive for a while, city & highway speeds, and I right clicked and selected MAFComp Adjust (Combined FT)

From my butt dyno it feels like it pulls better but then again could be placebo effect so I was wondering what you guys think.
 

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In your MAFComp you should smoothen things out a little, I don't like the nasty jumps.
ECMlink will interpolate between adjacent Hz values so you should bring down your 50Hz down and you 0Hz up and meet somewhere in the middle for those values. You could do the same thing for 150Hz and 200Hz. I would also bring up your 400Hz to smoothen the drop between 300-500Hz.

In your pulls you're getting some Knock, adjust your timing down in the DA tables, just click "Track Data log in your TimingMaxOct table and find the cells that have knock corresponding to them and bring them down a couple degrees, then interpolate the values with adjacent cells.

Get a wideband and log it, then go back and do WOT pulls and adjust your AFR with your MAFCamp graph in the larger Hz's. Use WBFactor when doing this, this could help with knock as well along with getting the most out of your pulls.

Also, don't use the MAFComp function with WOT pulls, do it "by hand," but not until you get a wideband logged.

Keep your WOT pulls seperate from your cruise logs and idle logs.
 
Looking at it again, You're also getting knock at 3500rpm in what appears to be 5th gear at 100% throttle. This could phantom knock (but maybe not because you are in fact 100% throttle), or your afr's are too high (which I wouldn't know because there's no wideband) Adjust your knock control to >3500 and >60% throttle position and check again. Check your knock wiring and sensor for proper torque/volts/goo.

Remember knock is bad. 1-2 degree retard isn't life threatening but I would shoot for ZERO always.
 
Cameron, what is the torque on the knock sensor, I have mine hand tight and a little more than 1/4 of a turn with a wrench. I could never find a value in the FSM so thought maybe you had a value that you were comfortable with. Thanks.
 
Very much appreciated! Thanks Brian!
 
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