If you could get your hands on an LT1 MAF table, that would be very useful to guys that are looking for a MAF table that moves a lot of air. This is what I've heard, but I'm still looking for it.
In these cases, we'll run a AFC and set it to whatever percentage of reduction is required to stay under 11,500 Hz. Then we'll change the fuel injector scaling in the PCM by that same percentage.
I had this problem for awhile and was frustrated. Solution was to run the SLP MAF from INTENSE, highest MAFF I've seen since the install was 10900. Well within the allowed table. It may take some PCM tweaking, but it works just fine now.
Oh... thats running a MP112 with a 2.7 pulley too
One more question for Scott. The tables you posted show only the flow numbers but not the coresponding frequencies. I suspect not all of these show flow at the same frequencies. How we deal with that?
how to i add the 00' MAF numbers in HPtuners because we recently found out that I could be running off of the 99' MAF tables instead of the 2000 which are much diff. up top.
Hey guys, I think I'm having trouble with my SLP/LS1 maff sensor. I do have the '98 Fbody LS1 maf tables in the pcm too. Have spoken with some knowledgeable people about this, and they think it's the maf sensor. I'm be cruising along say 55 mph and just randomly my LTFT's will go from around zero up to +16.4 and my AF (from my PLX 250 wideband) will show an AF of 10.0:1! So somehow the pcm is being commanded tons of fuel thinking it's lean when it's not, and my car drowns in fuel when this happens. Also get a "chugging" at idle just every so often when it's doing this. This all doesn't happen all the time, it's somewhat random but when it does it it always does it under gentle cruise. So......I have the choice of either running the 75mm maf sensor & matching maf tables that John T. is running (which I just hate the thought of going from 85mm to 75mm thinking it might restrict me some) or using an LQ4 maf. If I use the LQ4 maf, can anyone tell me if I use either the 5.3L or the 6.0L truck mafs on the first page of this thread?
If not, does anyone have the matching maf tables I could use with the LQ4 maf?
Hey guys, I think I'm having trouble with my SLP/LS1 maff sensor. I do have the '98 Fbody LS1 maf tables in the pcm too. Have spoken with some knowledgeable people about this, and they think it's the maf sensor. I'm be cruising along say 55 mph and just randomly my LTFT's will go from around zero up to +16.4 and my AF (from my PLX 250 wideband) will show an AF of 10.0:1! So somehow the pcm is being commanded tons of fuel thinking it's lean when it's not, and my car drowns in fuel when this happens. Also get a "chugging" at idle just every so often when it's doing this. This all doesn't happen all the time, it's somewhat random but when it does it it always does it under gentle cruise. So......I have the choice of either running the 75mm maf sensor & matching maf tables that John T. is running (which I just hate the thought of going from 85mm to 75mm thinking it might restrict me some) or using an LQ4 maf. If I use the LQ4 maf, can anyone tell me if I use either the 5.3L or the 6.0L truck mafs on the first page of this thread?
If not, does anyone have the matching maf tables I could use with the LQ4 maf?
So I've got an LQ4 maf sitting at the house, and I hear everyone for whatever reason just uses L67 maf tables and adjusts them a little for the LQ4 maf. Question is, is anyone using the 6.0L or 5.3L truck tables in their pcm with the LQ4 maf? Anyone? Just trying to figure out which tables to use in my pcm........
i have an LS6 MAF that ive damaged somehow, what MAF would be the best to get as a replacement? its the MAF that came with the ZZP LS! kits when they first became available.
I was digging thru some of the codes I have available to me and noticed that MAF flow rates were different between differing vehicles/engines, but I don't remember the sensor itself being any different. To explain in greater detail, note the two MAF tables from different vehicles...
Ok, at first glance, one would assume these are different MAF sensors. However, I just checked the MAF sensor part numbers for both vehicles thru 3 different vendors, and discovered both vehicles listed above use the EXACT SAME p/n MAF sensor (AC Delco 213-353). Here is the complete vehicle list that Delco says this MAF sensor fits: http://198.208.187.182/internet/VehiclePartFits.jsp?part=213-353&autosel=A&pageno=0
What gives? If it is the same sensor, why is GM assigning different flow rates to it?
Very common, the application of the MAF determines the calibration. So any part of the intake tract gets changed, the MAF flow will need some minor updates. Look at a Ram Air TA vs a non Ram Air or even a Ram Air or Non RA to a Vette, or a Z28 vs a Z28 SS (Ram Air).
Just use the MAF table as a starting point, but in reality, unless it is in the identical application, it will always be different than what the original application was. i.e. Z06 MAF in a L18 496 is characterized quite differently.
The MAF in the Vortec trucks is the same as the LT1 Z28's/TA's and Vettes. 454, 350, LT1 or LT4. All same MAF.
Attached is some more MAF's that are out there...LT1, LT4, L31, L29, L18, Z06/LS6.
Edit: Updated spreadsheet for Z06 (2001 and 2004).
I was digging thru some of the codes I have available to me and noticed that MAF flow rates were different between differing vehicles/engines, but I don't remember the sensor itself being any different. To explain in greater detail, note the two MAF tables from different vehicles...
Ok, at first glance, one would assume these are different MAF sensors. However, I just checked the MAF sensor part numbers for both vehicles thru 3 different vendors, and discovered both vehicles listed above use the EXACT SAME p/n MAF sensor (AC Delco 213-353). Here is the complete vehicle list that Delco says this MAF sensor fits: Parts Information | ACDelco
What gives? If it is the same sensor, why is GM assigning different flow rates to it?
Just some more info, appearantly the MAF sensor is the exact same between 1996-1998 3800 Series II n/a AND SC engines: Parts Information | ACDelco
anyone know if the '98 and earlier MAF's run different tables than the '99 and later MAF's?? Like say I am running a 98 ported TB on my 2000 L36 is that an issue that I should look in to??
One question I have is how does one go about "installing" different MAF tables in the PCM? I'm gonna have to, just to get things right, since I have 1997 L67 MAF with a 1998 PCM.
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