Warchild Posted March 7, 2017 Report Share Posted March 7, 2017 Guys Please help. For the Innovate Wide band AFR kit installed, what is the difference on the Bosch 4.2 and the Bosch 4.9 sensor ? Which one to use when ? Quote Link to comment Share on other sites More sharing options...
Davidv Posted March 7, 2017 Report Share Posted March 7, 2017 They have different plugs, so you shouldnt be able to mix them up.You can use either, but make sure that the setting in the controller matches the sensor you are using.4.9 should be more reliable / longer lasting. Quote Link to comment Share on other sites More sharing options...
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