One Part Needed For A 2.5 Mj

[cz777]

where to get the best map sensor for a 2.5 mj .....i hate the china made crap !!! damn backfiring is driving me nuts ...i used a friend's gm made one without a hicup .......one other is the setting for IAC motor what is ideal speed setting and pinnacle length from base to end in mm ...thxs