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It's a pretty divisive issue. *Personally*, and this is just me, I don't want a sensor being fed false data in order to force extra boost. Granted, the tech has come a long way since wiring in a resistor to get more boost, but I don't trust it. To each their own; it might be fine, but I personally do not trust it.
Basically, if feeds modified maf data, causing your car to make more boost - I'd guess that with our torque-target ecu's on a stock tune it probably fights back and forth. I don't know if having a tune mitigates the torque-target "fight" or not, but I'd think if you already have a Cobb AP you could just get an actual tune done that would accomplish the same. I have to admit I'm morbidly curious about running a tune *and* a maf override. I think that the current turbo transformer only modifies data after like 10-12psi of boost to avoid modifying at part throttle, but any familiarity I had with them is *many* years old.
I know a bunch of owners have them and endorse them, that's cool - I personally mistrust the mechanism by which they work. It's probably safer on modern cars given the presence of a wideband o2 sensor stock and the much faster polling rate than the vehicles on which I experienced a similar product in the past. I would never run something like that on, say, one of my grand nationals - the ecu responses are way too slow to be safe. With the fast polling rate on a newer obd2 car with wideband sensor :shrug: I dunno. Might be way safer.
Basically, if feeds modified maf data, causing your car to make more boost - I'd guess that with our torque-target ecu's on a stock tune it probably fights back and forth. I don't know if having a tune mitigates the torque-target "fight" or not, but I'd think if you already have a Cobb AP you could just get an actual tune done that would accomplish the same. I have to admit I'm morbidly curious about running a tune *and* a maf override. I think that the current turbo transformer only modifies data after like 10-12psi of boost to avoid modifying at part throttle, but any familiarity I had with them is *many* years old.
I know a bunch of owners have them and endorse them, that's cool - I personally mistrust the mechanism by which they work. It's probably safer on modern cars given the presence of a wideband o2 sensor stock and the much faster polling rate than the vehicles on which I experienced a similar product in the past. I would never run something like that on, say, one of my grand nationals - the ecu responses are way too slow to be safe. With the fast polling rate on a newer obd2 car with wideband sensor :shrug: I dunno. Might be way safer.
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