How well would taking the sensor out of the stock housing and putting it in a larger diameter pipe work. I mean with no tunning to compensate other than fuel pressure adjustmets. I would assume this would cause the car to run lean. Can i just compensate with more fuel pressure. Will the benifits of more air out way the tunning drawbacks? Im thinking about taking the electronics out of the stock maf and putting it into a larger housing. Along with the addition of a custon cai. This stock stuff has got to be killing me. I am making 360 rwhp at 6600 rpm. I dont have the money right now for dfi. So I thought i would play around with the maf. What do you guys think. Will the driviability issues out way the hp improvement?

 

As I understand it from the guys who have tried stuff like this (and stuff a lot stranger, too) the main problem is that the flow increases won't be linear. It won't just flow 30% more if you give it 30% more flow area. So you might be able to tune the fuel curve accurately for light throttle/light load by fiddling with fuel pressure, but at heavy throttle/heavy load the error will greater and perhaps in a different direction than what you set your fuel pressure for.

Somebody with a bigger brain and more expereince really needs to answer this question.

 

Switch to a MAP system and program your own chips. Best way to get more air in and still be accurate with the calibration.

Hodge

 

You can run a larger tube, but you have to reprogram the chip. The MAF scalar tables are basically calibration tables, the sensor has an output and the tables convert that to an airflow number. It doesnt much matter what size tube the sensing element is in (although, of course, 100' diameter would really screw things up) as long as the scalar tables are adjusted accordingly so the airflow being used by the ecm is the actual airflow going into the engine. Once thats done, if you run an 87-88 chip and adjust the base PW tables, its not any different than a SD setup. You can pick specific loads and RPM's and adjust the fuel at just that point, just like SD.

 

Of course, the computer can only recognize 255g/s no matter what size tube you run it through, so your benefits will be minimal.