MAF tuning vs SD
I prefer using the maf most of the time.
Sd is used by us mostly on turbo, supercharged or very big camed cars. When in sd we shut off the 02's too. Have many cars tuned liked that and have been for a long time with no failures. So I'd say it can be safe.
Sd is used by us mostly on turbo, supercharged or very big camed cars. When in sd we shut off the 02's too. Have many cars tuned liked that and have been for a long time with no failures. So I'd say it can be safe.
They have done a pretty good job of dumbing their software down for general consumption.
Last edited by Ed Wright; Jul 6, 2013 at 05:28 PM.
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...
PE is a fueling table... PE does not add fuel on top of VE or MAF... if active, PE specifies the desired/commanded fueling (if its operating point/cell is the richest of the currently active fueling tables) indendently of VE or MAF... (and, if CL was present, the last/learnt positive LTFT is added on top of PE fueling).
PE is a fueling table... PE does not add fuel on top of VE or MAF... if active, PE specifies the desired/commanded fueling (if its operating point/cell is the richest of the currently active fueling tables) indendently of VE or MAF... (and, if CL was present, the last/learnt positive LTFT is added on top of PE fueling).
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From: So.Cal.
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From: So.Cal.
Not just the missing variables... we don't have access to the algorithms tying the known and unknown variables together.
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Yes, there would be more (of which I admit I don't know enough of)... but one of the side-effects is the transmission line pressure calculation (especially when from the factory, for some vehicles, the MAF DTC's are turned off in the trans fault tables), an unsuspecting software user can end up with a burnt trans...
Edit: reworded because I couldn't understand my sentence... you'd think I was English deficient...
Thank you.
Nowhere in the thread does anyone say you have to have SD tuning on a boosted car, nor does anyone hint that you would.
In fact I think Ed has made it clear he still prefers MAF tuning in boosted cars.
SD tuning is what a lot of guys use just because it doesn't take as much effort after the MAF is maxed (as I said in my post that seemed to confuse you, or you needed more info on).
Once the MAF is maxed, a tuner will need to adjust and compensate for the PE tables that are no longer being read. It definately can be done though (its been done to my car several times successfully).
In fact I think Ed has made it clear he still prefers MAF tuning in boosted cars.
SD tuning is what a lot of guys use just because it doesn't take as much effort after the MAF is maxed (as I said in my post that seemed to confuse you, or you needed more info on).
Once the MAF is maxed, a tuner will need to adjust and compensate for the PE tables that are no longer being read. It definately can be done though (its been done to my car several times successfully).
In fact I think Ed has made it clear he still prefers MAF tuning in boosted cars.
SD tuning is what a lot of guys use just because it doesn't take as much effort after the MAF is maxed (as I said in my post that seemed to confuse you, or you needed more info on).
Once the MAF is maxed, a tuner will need to adjust and compensate for the PE tables that are no longer being read. It definately can be done though (its been done to my car several times successfully).
SD tuning is what a lot of guys use just because it doesn't take as much effort after the MAF is maxed (as I said in my post that seemed to confuse you, or you needed more info on).
Once the MAF is maxed, a tuner will need to adjust and compensate for the PE tables that are no longer being read. It definately can be done though (its been done to my car several times successfully).
Thank you for your response. I'm sorry if i offended you some how.
I have to wonder who told you the PE table is "no longer being read" after the MAF maxes? Absolutely false. Blower cars have a predictable boost curve. Turbo cars, often not.
At any rate; now that this thread is officially off topic, I would like to open it up for more people to input info on MAF vs SD tuning.