Alot of times you can fix hesitation problems on b16a1's by switching the o2 sensor wires around. If you don't have two o2 sensors wired in then you should wire them in correctly.
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Don't bother giving me "rep", I won't return it and I think it is stupid.
Gracie Barra Clearwater
Gyms in Clearwater, St. Pete and Port Richey
pm me if you are interested in trying a free class at any of the gyms.