Advantages/disadvantages of SD?
05-22-2006, 01:35 PM
#41
Originally Posted by gameover
eg. would you work out your house electricity usage by looking at the rating of all your appliances, measure how long you had them all on for each day and then add them for your final result? Or would you just read the meter?
to be more accurate, i edited it for you:
Originally Posted by gameover
eg. would you work out your house electricity usage by looking at the rating of all your appliances, measure how long you had them all on for each day and then add them for your final result? Or would you hookup a lightbulb to all power going into the house, measure how much it dims, then look up that brightness on a table to determine the amount of power used?
i think my edited anology is more accurate.
PS, feel free to copy my avatar..
05-22-2006, 01:59 PM
#43
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Originally Posted by white2001s10
I'll never understand MAF lovers. This weekend I got a good underhood pic of the new 427 powered Z06, and guess what...
no MAF to be seen.
I suppose they will start getting recalled after so many complaints come in that it has drivability problems because the tune is off.
Hmmm... I wonder how many people will do a "add MAF" conversion on their new Z06 to make it run better.
hee hee haa haa
05-22-2006, 02:11 PM
#44
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Originally Posted by white2001s10
I'll never understand MAF lovers. This weekend I got a good underhood pic of the new 427 powered Z06, and guess what...
no MAF to be seen.
I suppose they will start getting recalled after so many complaints come in that it has drivability problems because the tune is off.
Hmmm... I wonder how many people will do a "add MAF" conversion on their new Z06 to make it run better.
hee hee haa haa
05-22-2006, 02:38 PM
#45
GM didn't spend the millions of dollars on the MAF, calibrations, and then installing one on every vehicle for no reason.....
Tuning a true MAF based vehicle vs a SD one, is MUCH easier....
The LS7 uses a "slot" style meter, it seems that many companies are going to this style, ford, nissan, as well as GM.
Ryan
Tuning a true MAF based vehicle vs a SD one, is MUCH easier....
The LS7 uses a "slot" style meter, it seems that many companies are going to this style, ford, nissan, as well as GM.
Ryan
05-22-2006, 03:18 PM
#47
Originally Posted by slow
GM didn't spend the millions of dollars on the MAF, calibrations, and then installing one on every vehicle for no reason.....
Tuning a true MAF based vehicle vs a SD one, is MUCH easier....
The LS7 uses a "slot" style meter, it seems that many companies are going to this style, ford, nissan, as well as GM.
Ryan
Tuning a true MAF based vehicle vs a SD one, is MUCH easier....
The LS7 uses a "slot" style meter, it seems that many companies are going to this style, ford, nissan, as well as GM.
Ryan
.
05-22-2006, 05:13 PM
#50
Originally Posted by white2001s10
Okay well that's tricky & unexpected being molded into the duct.
Looks like they made it impossible to modify the air ducting for things like FI without ditching the MAF in the process.
I do know that GM has rolled out many models that ran SD mode without a problem.
Looks like they made it impossible to modify the air ducting for things like FI without ditching the MAF in the process.
I do know that GM has rolled out many models that ran SD mode without a problem.
05-22-2006, 08:23 PM
#51
TECH Senior Member
You just run with or without MAF as the mood strikes you on any particular day, no harm done, no worries, it's an option that's available ("...today, will I wear a white T-shirt or a black one...? Will I run with MAF or without...?").
$0.01
$0.01
05-22-2006, 08:40 PM
#52
Originally Posted by white2001s10
Okay well that's tricky & unexpected being molded into the duct.
Looks like they made it impossible to modify the air ducting for things like FI without ditching the MAF in the process.
I do know that GM has rolled out many models that ran SD mode without a problem.
Looks like they made it impossible to modify the air ducting for things like FI without ditching the MAF in the process.
I do know that GM has rolled out many models that ran SD mode without a problem.
Ford did a similar maf in 2004/2005, and are are about 40 different CAI kits out there between the mustang, and F150's.
Here is one such solution to be tig welded to a 4" piece of aluminum pipeRyan
Last edited by slow; 05-22-2006 at 08:58 PM.
05-22-2006, 08:58 PM
#53
Originally Posted by ROCNDAV
I just wish there was a 90 or 100mm MAF sensor for our cars, but I heard that they don't work or read airflow corectly when diameters get that big which is why cars like Vipers have dual MAFs.
.
.
Ryan
05-22-2006, 09:27 PM
#54
Originally Posted by slow
nope to the impossible part
Ford did a similar maf in 2004/2005, and are are about 40 different CAI kits out there between the mustang, and F150's.
Here is one such solution to be tig welded to a 4" piece of aluminum pipe
Ryan
Ford did a similar maf in 2004/2005, and are are about 40 different CAI kits out there between the mustang, and F150's.
Here is one such solution to be tig welded to a 4" piece of aluminum pipeRyan
05-23-2006, 05:06 AM
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Originally Posted by MrDude_1
no-one commented on my analogy.. 
my point was, they're BOTH indirect measurements.... atleast on the LS1/2 type of MAF
my point was, they're BOTH indirect measurements.... atleast on the LS1/2 type of MAF
05-23-2006, 07:52 AM
#58
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the MAF frequency is just a means to an end, as an example most fords use a 0-5V voltage to convey the airflow information to the PCM. The output used generally co-incides with the technology/method used to heat the wire element. How else would the MAF communicate 123 g/sec to the PCM?
Bottom line is MAF directly measures the airflow (to its best ability). SD estimates it based on a few measurements and a very large human controlled fudge factor called the VE table (again the human works to their best ability).
I like to think that humans are smarter than MAFs
Chris...
Bottom line is MAF directly measures the airflow (to its best ability). SD estimates it based on a few measurements and a very large human controlled fudge factor called the VE table (again the human works to their best ability).
I like to think that humans are smarter than MAFs
Chris...
05-23-2006, 08:32 AM
#59
Originally Posted by slow
if enough interest, i can get the guy who made those to look into doing 3.5", he has 3 and 4" available now. (I would need to get a LS7 maf element to verify that the hole is the same, but they look similar. )
Ryan
Ryan
05-23-2006, 10:21 AM
#60
The wiring is different LS7 vs LS1, so it would need an adapter.
Maybe I'll order a LS7 maf and see what can be done,unfortunately, the design of the meter is not ideal for a LS1 car, such as a f-car, since the airflow really should be more straight to use it, such as a GTO setup, or side mouted on the vette, as installed by GM on the LS7.
Ryan
Maybe I'll order a LS7 maf and see what can be done,unfortunately, the design of the meter is not ideal for a LS1 car, such as a f-car, since the airflow really should be more straight to use it, such as a GTO setup, or side mouted on the vette, as installed by GM on the LS7.
Ryan