T4 can’t put it on, well not the Omitec T4 out of the box anyway. Toaf or BMW Scanner units can by changing a particular number in the IPK code, but that then throws up an error message of ‘check sum incorrect’ when a T4 is later connected. Not a problem and T4 can be used in the normal way without affecting the modification.
The only problem is when rewriting any updates using T4 back to a car for example changing dealer options such as lazy lock, then T4 will rewrite the modified check sum digit back to its original thus loosing the digital speedo.
Of course it’s entirely possible that the same laptop PC used to run T4 can have loaded onto it, the BMW scanner software or toaf, so perhaps that is what confused you Simon?
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