Cummins ISM not reading boost correctly?

[Mikesuburban1]

(02-26-2017 )Rawze Wrote:  

(02-26-2017 )Mikesuburban1 Wrote:  No its not custom tuned. I just had it at my local cummins shop and they replaced the turbo and updated my ecm. I bought this truck used in july 2016 and i has been giving me problems ever since

You said it did it since the update? -- It is possible they could have put the wrong update in it. I have seen that before. They could also have gotten a b ad address or port setting to one of the sensors too. A lot can go wrong during an update if someone is not so good at it.

It is also possible they did not calibrate the turbo properly.

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I do not work on ISM. Maybe some of the other guys form forum can jump in that do and give some info too.

It had the work done in October of 2016 and started having problems in January 2017. Could air in the fuel system give a problem like this ? Or is it more of a ecm thing