f22A6 intake manifold

[Taurians' Ryde]

Wrote a sweet lil post about this kinda thing and the effects....just an fyi....

check..
check..
check it out...

( lol holy technotronic )

http://www.cb7tuner.com/vbb/showthread.php?t=151819


I'm not saying I know everything about it..but I know enough to offer my thoughts.

[chessboxer]

That is not the reason you would want a PT6. The main reason you would want a PT6 over a PT3 with a F22A6 intake manifold is for the IAB's. The PT6 activates the secondary runners. It really has nothing to do with compensating for the extra air flow because I'm pretty sure the ECU would do this automatically based on the O2 sensor reading.

You are talking about closed loop o2 control vs. the default fueling value in the map for that load site.

Essentially, and I am getting off topic here, in regards to the OP's question, but I see this misconception all the time.

Yes, an o2 sensor will work to adjust fuel values for a car, but this only occurs under a certain set of preset conditions. Usually, this is under a light throttle load, usually under 10%, and then the ecu will read the o2 sensor, see what afr or lambda value the car is at versus a target afr/lambda value that has been predetermined for that load cell, and it will make an adjustment up to a certain percentage based upon that. Usually it will not correct over 20%, but I am not sure what the default closed loop o2 calibrations are. On an aftermarket ecu that supports closed loop o2 control, these values are configurable. On a stock ecu, they are predetermined.
Cliffs niotes: it will only adjust under a certain throttle percentage and only adjust so much. It will not adjust this at 50 or 100% throttle.

That being said, the default fuel values that are programmed will be the predominant values when you are under load and more than just partial/cruising throttle. So for instance, say at 5200 RPM and -2.3 PSI, you have 2.65 ms of injection time, if you are at 100% throttle, this value will not change. If you were at about 5% throttle, it very may well change higher or lower to meet your target afr.

Also, closed loop o2 control changes are not permanent. These are emporary changes. This is not even a long term fuel trim, it is a short term fuel trim, something we could get into some other time.

Holla.