Huge power drop... | The Focus ST Network Forum

Huge power drop...

Discussion in 'Focus ST Engine Upgrades' started by SLOCUS16, Jul 11, 2017.

  1. SLOCUS16

    SLOCUS16 New Member

    Question... I have the '16 FoST COBB Stage2... when I get on it it spools about 22psi and pulls hard until it reaches about 5500rpm and then all of a sudden the car jerks and completely stops pulling...kinda feels like when you over rev. I have no clue what or why this is happening. It can't be good I don't think.



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