OBD_MAF_differance
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OBD_MAF_differance
could_someone_give_tell_me_the_differance_Between_ the_OBD_and_MAF_systems_on_ford_engines_and_how_mu ch_work_it_is_to_convert_OBD_to_MAF
PS_Sorry_about_the_underscores_my_spacebar_quit_wo rking_lol
PS_Sorry_about_the_underscores_my_spacebar_quit_wo rking_lol
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From: Louisville,Ky.
OBD is On Board Diagnostics. There is OBD-I 95 and older and OBD-II 96-up.
There is speed density efi and maf efi.
Speed density uses preporgrammed fuel/timing curves using the TPS, IAC, ECT MAP and O2 sensors.
MAF used all of these except the MAP sensor. The MAP sensor is used to calculate fuel mixture by engine vacuum. The MAF measures actual incoming airflow. The MAF will adapt to modifications such as better heads and larger cams where the speed density sytem will not.
Does this answer your question?
There is speed density efi and maf efi.
Speed density uses preporgrammed fuel/timing curves using the TPS, IAC, ECT MAP and O2 sensors.
MAF used all of these except the MAP sensor. The MAP sensor is used to calculate fuel mixture by engine vacuum. The MAF measures actual incoming airflow. The MAF will adapt to modifications such as better heads and larger cams where the speed density sytem will not.
Does this answer your question?
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From: Louisville,Ky.
The easy to do kit is about $500 from Ford racing. It consist of the MAF and housing, air intake tube for MAF, wiring and the correct ECM.
Unless you plan on installing a larger cam and or better flowing heads on it, I wouldn't worry about swapping it over. Check out http://www.fordracingparts.com for the kit. I know places like Summitracing and Jegs should carry it.
Unless you plan on installing a larger cam and or better flowing heads on it, I wouldn't worry about swapping it over. Check out http://www.fordracingparts.com for the kit. I know places like Summitracing and Jegs should carry it.
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Thanks_the_imput_LxMan1._I_only_plan_on_hedders_Tr ue_duels_and_fipk_for_now_maybe_down_the_road_when _rebuild_time_comes_along_going_to_a_351_with_clea vland_heads._LxMan1_I_see_we_are_not_to_neighbors_ Im_just_southeast_of_colombus_IN_waving_southward_ thanks_for_the_imput
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The speed density should be fine with those mods. My Mustang ran fine with bigger headers, Flowmasters and a ram air system with a K&N filter with the SD system. I later converted it to MAF because I someday plan on good heads, a healthy cam and hopefullt 347ci. 
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