Strype said:Evidentally no one read the article
You can't "calibrate" it guys...
Strype said:The ford and KB maf sensors are different (from all others). They actually look on a table via the eec and pic which injector you are using mathmatically...
The other after market companies just change the size of the chamber that holds the sensors (one temp and one speed I think) in the maf itself, therefore they cannot look it up on the table and have to be "calibrated"... the problem is this throws off the "Load" calculation and mucks everything up. If you use an aftermarkedt MAF calibrated for 30lb injectors with you 30lb injectors chances are you'll have idling problems and such... if you just use a ford maf, you'll have none of those problems since none of them are "calibrated" and they can all be used from injector to injector (at least that's what the article said). Wide open throttle will not be a problem btw, just idling and general running
catman4115 said:i am having issues at idle with both meters it fells like it is going to stall out all the time and is slugish on the throttle below 2k rpm. I will push the gas 1/4 way down and the car goes nowhere, then there will be a sudden surge and the car takes off.
catman4115 said:yes they are both made for 30lb injectors
vristang said:I guess I don't fully understand the reason you are making the change.
Do you have a third MAF that you are using now?
What is the setup that you have been running to this point?
What computer do you have?
Have you had a custom chip / dyno tune done?
Are you getting any codes?
When you do change meters, how long do you run the car before deciding it
runs poorly?
In datalogs I have seen it take up to 20 miles to get the Adaptive Strategy to settle down.
What color is the sample tube in the 76mm C&L?
Can you provide a part number for the Granatelli meter?
Sorry to ask so many questions, but I feel as if we are getting bits and pieces to the story.
It is hard to tell what is going on when that is the case.
jason
catman4115 said:I had originally bought the granatelli but later purchased the c&l for the tube to replace the stock intake tube with the intention of selling the granatelli. I just replaced my motor and havent found a setup that works well with my combination. I should also mention that my car uses a ridiculous amount of gas, im proibily getting 90 miles to a tank.
Im using an A9P computer which hasnt been chiped or to the dyno. The only codes i get are for my smog pump probibly because I dont one and Ive driven the car for a few days with both meters on there, the c&l tends to idle a little better but the granatelli seems like it has more at WOT.
The sample tube is purple, i checked the site and thats what its supposed to be. Granatelli # is 75935030-00c
Also the article is really interesting to read
vristang said:The load calculation error introduced by an aftermarket MAF is not as bad as you have made it sound. Many people throw an aftermarket maf on the car and experience no issues. But you are right it is not ideal.
As far as all Ford MAF meters being interchangeable...
The sn95 Mustang 70mm MAF is interchangable with the stock 5.0 MAF (F1ZF).
This is purely coincidence as it was not designed this way.
This is the only instance I am aware of.
Think of it this way.
A Ford MAF is calibrated to the computer.
An aftermarket MAF is cal'd to the injector and computer.
I will try to read that article again tonight, it seems there may be some verbage that is confusing an already messy subject.
jason
Strype said:Awesome- see I'm just quoting the article cause I'm learning myself... I'd love someone to explain this in lamens terms...
It does look like a messy subject
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