High rpm!!!!help

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SpiDer21

New Member
hey guys...needing some inputs...just did my very fist swap...a b20 auto on a 90 DA teg...swapped the long block only! everything is bonestock including ecu...everything is good except the high rpm's that im getting...its killing me on mpg...any inputs????:confused:
im getting a 3900rpm on a 70mph...<<<<<appreciate any help and inputs>>>>
 
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