richduty455
Dedicated LVC Member
will a MAF from a 96 cobra work on a mark viii?? Is it better???
cobra MAF
- Thread starter richduty455
- Start date
ONEBADMK8
Dedicated LVC Member
No difference at all. Call me up, ours in sale right now.
richduty455
Dedicated LVC Member
we just tossing it around......i found one of craigslist locally for $25, didn't know if it was any better of not.....
there fixed it for ya!
*grins*
show me a datalog where a stock mark 8 pegs the stock meter THEN and ONLY then should you increase the MAF size.
data shall set you free.
look at this screen cap from my last datalog at the track.
I placed the indicator at the peak RPM on that run, which was the 1-2 shift.
You can see the line that is red is the RPM trace and it peak at 6156
The yellow line is MAF AD counts, which translate into maf voltage in the lower right hand window in the MAF transfer function for a stock mark 8 that I added into this photo for reference.
at 6156 RPM's the MAF AD counts are at 883 out of 1024
883 AD counts is between 4.24volts and 4.49 volts out of a possible 5Volt range.
Clearly this shows the stock NA mark 8 has enough top end overhead with the stock air meter in place.
What happens when you put a larger meter on there, is you lose the bottom end "resolution" of the maf table, which means your part throttle and low RPM fuel control is limited...this is bad
Then when you go WOT rather than using MOST of the MAF sensors range you only use about half of the range....this is bad
When I had a larger maf on my first gen at WOT at 6K the maf voltage was 2.8-3.0 which if you look at the transfer function is only using the "bottom half" of the MAF transfer function...this is bad
From a tuning stand point this is bad..very bad.
look at this screen cap from my last datalog at the track.
I placed the indicator at the peak RPM on that run, which was the 1-2 shift.
You can see the line that is red is the RPM trace and it peak at 6156
The yellow line is MAF AD counts, which translate into maf voltage in the lower right hand window in the MAF transfer function for a stock mark 8 that I added into this photo for reference.
at 6156 RPM's the MAF AD counts are at 883 out of 1024
883 AD counts is between 4.24volts and 4.49 volts out of a possible 5Volt range.
Clearly this shows the stock NA mark 8 has enough top end overhead with the stock air meter in place.
What happens when you put a larger meter on there, is you lose the bottom end "resolution" of the maf table, which means your part throttle and low RPM fuel control is limited...this is bad
Then when you go WOT rather than using MOST of the MAF sensors range you only use about half of the range....this is bad
When I had a larger maf on my first gen at WOT at 6K the maf voltage was 2.8-3.0 which if you look at the transfer function is only using the "bottom half" of the MAF transfer function...this is bad
From a tuning stand point this is bad..very bad.
kustomizingkid
Dedicated LVC Member
Tommy already has this one covered but... the stock MAF is just fine....
topher5150
Dedicated LVC Member
are you talking about the MAF sensor?
what kind of a difference would a larger MAF sensor housing make?
what kind of a difference would a larger MAF sensor housing make?
it has the housing and the sensor. From what I recall from the past the mark8 sensor wont fit in the housing, and the cobra sensor wont plug into the mark8 harness. But if you want to buy it for $25 ill be more than happy to aleviate your wallet of its strain.