I know this has been talked about in a general conversation nothing specific. Searched for a hour and did reading but noting specific. If all you do is add a cold air intake should the MAF table be adjusted on a 100% stock MAF w/ screen? And if so roughly a starting point would help.
Thanks

 

if you dont alter the maf itself, theres no reason the change the maf tables.

 

except to recailbrate in the factorys error.

Datalog it and note at what freq its either rich or lean. and change it accordingly.

Of course my MAF experience is limited to 86-89 TPI and mustangs. But I'm sure it works the exact same way.

Bryan does all of our LT1 MAF stuff.

 

I've never run across a car that ran better after fiddling with the maf tables.
And I wouldn't suggest changing them after some of the things I've seen from cars that had modified maf tables.

 

Dan, sorry you had that experience. I on the other hand had better results. However, I took LOTS of time to do it right, I am talking 12+ hours of my time to develop the excel spreadsheet and the correct data to go into it.

Ben

 

What works for some doesn't work for others. We all know how that goes.
It's just that in my little experience, I've always gotten the stock maf tables to work well.
What you were attempting to do with the maf tables is completely different than what was being asked here.

 

Yeah agreed, but I wanted to respond directly to your situation and let others hear of different results. For sure MAF tables are not simple to modify the right way.

Ben

 

anybody got the stock map tables from tuner cat they can e-mail me for a 95 z with manual trans? I found a stock .bin for a 94 should those be the same?

 

Like I said above. I've been able to really dial the L98's and mustangs in by recailbrating the MAF to the car.

It makes sence to tune in the MAF meter and not give PE tables wierd resultants like 9:1 to get the right AFR.

 

I have also done MAF tuning, although I can't say I put 12+ hours in. I did two steps of MAF tuning, datalogging and then calculating error just like 95blackhawk did. Took me about 4 hours or so of actual work. Car runs like a CHAMP now when it was only so/so before. BLM's all within 126-130. Waiting to see what my first tank of gas gives me for gas mileage....

Jonota

 

Shouldn't be any different than what it was before. As long as the blm's are adjusting between 108 and 160 you aren't running rich or lean. So having the blm's centered around 128 should make absolutely no difference. That's why I've never understood why people mess with the maf tables.
Unless you're doing what 95Blackhawk has been doing...

 

I also enabled speed density mode and ran VEmaster several times. From my observations at this point, it has done little for closed loop driveability, but my startup/open loop idle and driving characteristics have DRASTICALLY improved.

Jonota

 

I am trying to get back to a state where the car runs decent, after a mail order tune car runs like hell. Figured i would give it a shot on my own after 2 shots from the tuner. Been studying quite a few custom tunes over the last few months and two things that catch my eye is the MAF tables are pretty different from anything i have seen, stock maf w/ cold air and screen. And the injector constant is almost stock within 1/2 pound per hour, i have 32 pound injectors. Car runs lean almost all the time and it feels like i am running out of gas at about 4000 rpm. As of today i checked the fuel pressure for the 100th time and it is still good.
Long story short i am trying to get this figured out on my own so i can tune the cars i do transplants on, or at the very least be able to talk intellegently to a tuner.

Any clues, hits or tips are appreciated.

 

I've never understood why "tuners" do that.
I can send you a file that I know is stock as I pulled it out of a stock car.
You can import the maf tables and correct the injector constant and see how the car runs then.
But if something bad happens I don't want to be responsible as you're modifying a file from an un-named tuner and who knows what else they've changed.

 

False Sorry