A chipped ECU is programmed to anticipate the extra gas released from the DV. Venting it to the atmosphere with a BOV will disrupt the ECU's air/fuel calculations and cause the engine to be rich during the period where the BOV is venting.

jei gerai perskaiciau. taip ir man aiskino, kad viska ka atmatavo MAF, bus ismesta lauk atsidarius isoriniui bov'ui. Vat del to ir padides kuro sanaudos ir reikes isnaujo suspasuti ora  turbinai... jei suklydau - pataisykit