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hello guys , i need your guys help I recently took out my mds solenoids and plugged them with the non mds plugs all i did was took off the intake and put it back and the plugs now my car having multiple misfires in 4 cylinders i change my cam sensor disabled the mds with a tune change the spark plugs change the coil packs and change a temp sensor still misfiring check engine starts blinking when in drive has a bit of a sputtering problem when taking off but in idle has some type of back fire could my upstream o2s cause my car to misfire and some codes pop up saying my car is running to rich and lean ?
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