MAFLESS was eas-why did I wait
08-19-2005, 08:38 PM
#1
Launching!
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MAFLESS was eas-why did I wait My car NEVER runs at part throttle. I'd been afraid to remove the MAF, but I finally tried it. Runs awesome. I never run it long enough at part throttle to worry about LTRMS, so I can just tune the PE vs RPM and forget about the rest.
Wish I would have done this on my old car!
Dave
http://www.DavidFarmerRacing.com/
Wish I would have done this on my old car!
Dave
http://www.DavidFarmerRacing.com/
08-20-2005, 06:57 AM
#3
I like SD for track days myself, everything reacts just a tad quicker.
Hey David, did you get my writeup on OL/SD stuff? Did it help you any?
Tuning just with PE and a wideband will get you a proper WOT behavior, but you still might look into getting your VE table dialed in for better transient fuel conditions. My car really woke up after I got it dialed in, and rolling on the throttle coming out of corners never felt better.
Hey David, did you get my writeup on OL/SD stuff? Did it help you any?
Tuning just with PE and a wideband will get you a proper WOT behavior, but you still might look into getting your VE table dialed in for better transient fuel conditions. My car really woke up after I got it dialed in, and rolling on the throttle coming out of corners never felt better.
08-20-2005, 08:30 AM
#5
TECH Junkie
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SD simply means you are running off the VE table with out MAF input.
Open Loop means you are not using the feed back from narrowband O2 sensors
Closed Loop uses feed back from the O2 sensors to trim the mixture to 14.63:1
So, to answer your question, yes, SD can be CL. Personally I run OL SD (I use a WB O2 to monitor my mixture).
In the VE table, the higher the value, the more fuel the PCM will add. Doesn't necessarily mean you'll be rich though.
Open Loop means you are not using the feed back from narrowband O2 sensors
Closed Loop uses feed back from the O2 sensors to trim the mixture to 14.63:1
So, to answer your question, yes, SD can be CL. Personally I run OL SD (I use a WB O2 to monitor my mixture).
In the VE table, the higher the value, the more fuel the PCM will add. Doesn't necessarily mean you'll be rich though.
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08-24-2005, 02:04 PM
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Launching!
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I read several write-ups, but loggin LTRMS isn't an option on my car, and I don't have a wide-band that records data. I'm basically flying by the seat of my pants, tuning parts of the tables as needed.
In my situation, even the largest MAF's readily available create restrictions, so I wanted to get rid of it for that reason. With the new LS2 style setup and 90mm throttle body, I wanted the air coming in as unrestricted as possible.
In my situation, even the largest MAF's readily available create restrictions, so I wanted to get rid of it for that reason. With the new LS2 style setup and 90mm throttle body, I wanted the air coming in as unrestricted as possible.
Last edited by Dave F; 08-24-2005 at 02:24 PM.