With so many questions about meter "clocking" and a/f this may help
#14
OK latest update from dyno today. The car = 2001 Bullit.
Mods :
Diablosport chip
Granetelli Maff and filter
Customer was concerned with detonation and loss of power at high rpm.
First answer to what he could do was....
wait for it....
"Remove that POS GMS and put on the stock one, I have seen cars make more power and cure drivability problems by removing them and using stock."
So he does that last night and brings it to the dyno.
we make a pull with the stock maff and k&n
255rwhp with consistant 12.8 a/f
We then swap the GMS unit with filter back in.....
225rwhp with 16:1 a/f
So I go back to my previous reccomendation...
Stick with the stock mass air flow sensor untill it will no longer flow enough air for the engine, then upgrade to a larger FORD meter and use a maff extender. If this was a supercharged engine not just N/A... it would be to late
Mods :
Diablosport chip
Granetelli Maff and filter
Customer was concerned with detonation and loss of power at high rpm.
First answer to what he could do was....
wait for it....
"Remove that POS GMS and put on the stock one, I have seen cars make more power and cure drivability problems by removing them and using stock."
So he does that last night and brings it to the dyno.
we make a pull with the stock maff and k&n
255rwhp with consistant 12.8 a/f
We then swap the GMS unit with filter back in.....
225rwhp with 16:1 a/f
So I go back to my previous reccomendation...
Stick with the stock mass air flow sensor untill it will no longer flow enough air for the engine, then upgrade to a larger FORD meter and use a maff extender. If this was a supercharged engine not just N/A... it would be to late
#16
Originally Posted by BrownBrosPerf
OK latest update from dyno today. The car = 2001 Bullit.
Mods :
Diablosport chip
Granetelli Maff and filter
Customer was concerned with detonation and loss of power at high rpm.
First answer to what he could do was....
wait for it....
"Remove that POS GMS and put on the stock one, I have seen cars make more power and cure drivability problems by removing them and using stock."
So he does that last night and brings it to the dyno.
we make a pull with the stock maff and k&n
255rwhp with consistant 12.8 a/f
We then swap the GMS unit with filter back in.....
225rwhp with 16:1 a/f
So I go back to my previous reccomendation...
Stick with the stock mass air flow sensor untill it will no longer flow enough air for the engine, then upgrade to a larger FORD meter and use a maff extender. If this was a supercharged engine not just N/A... it would be to late
Mods :
Diablosport chip
Granetelli Maff and filter
Customer was concerned with detonation and loss of power at high rpm.
First answer to what he could do was....
wait for it....
"Remove that POS GMS and put on the stock one, I have seen cars make more power and cure drivability problems by removing them and using stock."
So he does that last night and brings it to the dyno.
we make a pull with the stock maff and k&n
255rwhp with consistant 12.8 a/f
We then swap the GMS unit with filter back in.....
225rwhp with 16:1 a/f
So I go back to my previous reccomendation...
Stick with the stock mass air flow sensor untill it will no longer flow enough air for the engine, then upgrade to a larger FORD meter and use a maff extender. If this was a supercharged engine not just N/A... it would be to late
We are both right, just have different choices
#17
Actually I did a custom tune with one on a 99 cobra, replaced it with stock meter and retuned. 10rwhp more. It to was a GMS unit. In all honesty, a aftermarket maff is NOT required and will NOT make more power on a tuned car unless the meter is pegged. Save that extra $400 or so for something better.
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