Another example are so-called "presence" requests that should be sent to ECU in precisely fixed time intervals. For example, "long" CAN requests (sending a lot of data per single request) - ELM327 is not able to do it. "Native" vehicle protocols require more than OBDII family of protocols. In contrast to ELM327, with its text-based interface designed for serial port communication and limitations of AT-commands based protocol, J2534 Pass-Thru devices are initially designed for high performance and flexibility.Ģ. Let's list all the advantages of J2534 Pass-Thru devices:ġ. But the potential of J2534 devices will be explored in future versions of FORScan.
It should be counted that for now the support of J2534 adapters is rather experimental and gives no drastical advantage to user, except much better performance (up to 2 times faster than any white-label adapters like OBDLink MX and ELS27, and 5-20 times faster than fastest of china clones).
We believe that support of J2534 devices may be also interesting for other categories of users, such as Ford and Mazda enthusiasts, clubs etc. So we have added the PassThru support mainly for this category of users. Although this category of users is not numerous, we value them highly as they help us to better understand diagnostic tasks and objectives. This statement above is generally applicable to the "derived" adapters, such as OBDLink MX or ELS27.īut some part of our users are professionals in diagnostic and prefer to use professional tools, that are J2534 Pass-Thru adapters.
It was designed so good so can be used more widely, but this doesn't change the fact it is an amateur level device, that has lack of some features that are very desirable or even mandatory to work in full with modern Electronic Control Modules (ECUs). The ELM327, with all its known advantages, is an amateur level adapter designed for OBDII family of protocols. Majority of our users have ELM327 or compatible devices.
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