ar99kid
December 22nd, 2009, 12:49 AM
Condition : the MAF is relocated from 3 feet away right know is in front of throttle 4" ( my intake through the hood scoop).
because of this my MAF is reacting instant exactly like the TP ! i have logged and watched in the "osciloscope" dash page the TP , dynair g/s and MAF g/s. my observation is that TP and MAF are going exactly the same (graphic speaking) and the dynair is different for a fraction of time especially when TP suddenly moves. my thinking is that this appears because i don't have any air inertia the MAF being so close to the throttle and any rapid change in TP it isn't compensated by the ECU in the dynair . the dynair has a delay in reacting at instant move of the TP. you can see the yellow line on the graph is a little behind the TP and the MAF . and because of this i am getting p0101. right know i am only thinking of increasing the MAF rationality test ...
i am working right know on the c2911 table to increase very large amount from what scan tool is telling me , but i would like to know if there is a calibration that could delay the MAF readings ? something to give me more "air inertia" like the MAF would be seating farther away and don't have that instant readig like the TP is moving ...just for a fraction of second ...
is this possible ???
i have put some printscreens to be more easy to understand...
thanks for looking !
because of this my MAF is reacting instant exactly like the TP ! i have logged and watched in the "osciloscope" dash page the TP , dynair g/s and MAF g/s. my observation is that TP and MAF are going exactly the same (graphic speaking) and the dynair is different for a fraction of time especially when TP suddenly moves. my thinking is that this appears because i don't have any air inertia the MAF being so close to the throttle and any rapid change in TP it isn't compensated by the ECU in the dynair . the dynair has a delay in reacting at instant move of the TP. you can see the yellow line on the graph is a little behind the TP and the MAF . and because of this i am getting p0101. right know i am only thinking of increasing the MAF rationality test ...
i am working right know on the c2911 table to increase very large amount from what scan tool is telling me , but i would like to know if there is a calibration that could delay the MAF readings ? something to give me more "air inertia" like the MAF would be seating farther away and don't have that instant readig like the TP is moving ...just for a fraction of second ...
is this possible ???
i have put some printscreens to be more easy to understand...
thanks for looking !