Aftermarket MAF need retuned?? more hp??
06-06-2008, 06:37 AM
#1
Aftermarket MAF need retuned?? more hp?? I have an MS3 cam, Ported LS6 heads and an LS6 intake with ported stock TB. My car has been tuned already for all the mods. I was looking at my stock MAF the other day and it seemed a little small. I was wondering if getting an aftermarket (bigger) MAF sensor will add more power to my engine? and WILL it need to be tuned again after the install?
06-07-2008, 10:47 PM
#6
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Changing the diameter of the MAF housing will change the MAF table. The need for this device depends upon your CFM requirements and limitations. The gains are generally small.
06-08-2008, 12:24 AM
#7
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But in a N/A application, as long as your getting atmospheric pressure (90-105kpa) at WOT why would a larger maf give you more power? You will only make power if the smaller maf can be proved a restriction.
I am running a stock 85mm MAF (never installed my 100mm) and i'm seeing 92kpa (which is the current atmospheric pressure in my area.) This is on my LSx 454.
Boosted is a different story..h
I am running a stock 85mm MAF (never installed my 100mm) and i'm seeing 92kpa (which is the current atmospheric pressure in my area.) This is on my LSx 454.
Boosted is a different story..h
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06-10-2008, 07:19 AM
#9
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additional question The answer atmospheric pressure at WOT makes perfict sense but the question I have would the after market MAF give a more accurate reading and would it help the overall preformnce of the engine.
06-10-2008, 08:31 AM
#10
The current LS1, LS2, LS6 and all truck small blocks and the 8.1L big block, part number 15904068, will work for 95% of the people on here. It is 85mm and has dual heat elements which makes it more accurate. Plus they are cheaper than aftermarket. It works with or without the screen installed.
06-10-2008, 11:59 AM
#12
The current LS1, LS2, LS6 and all truck small blocks and the 8.1L big block, part number 15904068, will work for 95% of the people on here. It is 85mm and has dual heat elements which makes it more accurate. Plus they are cheaper than aftermarket. It works with or without the screen installed.
I hate these posts.... not necessarily the one I quoted, just the MAf swapping/porting/raping posts..
IF you swap your MAF, you have to retune your car. I don't care what is said, that is the bottom line. Changing the MAF will DRASTICALLY ALTER YOUR FUELING.
I just don't get it.... you guys DON'T NEED bigger MAFs, but it's like a damn obsession on this site.
FWIW, I maxed out one of those 85MM MAFs last week on a H/C/I car that made 445rwhp (M6 DJ224). It sat on the LAST CELL IN THE FREQUENCY TABLE... Guess what, with a stock de-screened MAF, the car had plenty of overhead and made the same HP.
06-10-2008, 01:04 PM
#13
Wondering why I got singled out, all was relaying was the same as what you said. Stock is good. If a larger one is desired, a stock GM unit is the best bang for the buck. If you have HP Tuners, a stock MAF table is easy to find to give you a good base to start with, aftermaket, you are on your own.
06-10-2008, 01:22 PM
#15
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ive had both an SLP and stocker before... i ended up back with the stocker. It doesnt feel like i lost any power, BUT the car runs alot better.
Last edited by 1fastz; 06-10-2008 at 09:33 PM.
06-10-2008, 02:56 PM
#16
Wondering why I got singled out, all was relaying was the same as what you said. Stock is good. If a larger one is desired, a stock GM unit is the best bang for the buck. If you have HP Tuners, a stock MAF table is easy to find to give you a good base to start with, aftermaket, you are on your own.
06-10-2008, 04:28 PM
#17
Frost, thats cool.
I ment that people should get a stock table from a vehicle with the 85mm MAF from the
HP Tuners repository and use that for a base table and tune from there. Thats what I did with the setup in my sig and things are working well so far.
I ment that people should get a stock table from a vehicle with the 85mm MAF from the
HP Tuners repository and use that for a base table and tune from there. Thats what I did with the setup in my sig and things are working well so far.
06-10-2008, 08:37 PM
#18
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You guys saved me money.I was going to buy a 85mm because im getting h/c work and went with 92mm T/B and the fast intake. I think the stocker will work fine.descreened.
06-10-2008, 11:47 PM
#19
I heard that you should never descreen the MAF sensor. I know descreening it will make it flow better but can cause other problems. My roommate has a 03 Mustang Mach 1 and when his car didn't have the screen in the MAF it would die sometimes when pressing in on the clutch letting the RPM's drop. If I descreen my MAF what kind of proplems am I going to POSSIBLY have? Should I descreen it? Will a retune be needed?
