AEM EMS Vs. Tein Flex Coilovers

[Shane@DBPerformance]

The knock sensors on the 2G are very good(1G guys with AEMs switch to the 2G knock sensor). But you need DSMLink to see knock with the 2G ECU. Don't expect to be able to easily tune by knock with an AEM EMS, like you can with DSMLink or a 1G datalogger. The knock sensor is a microphone, with the AEM EMS, you can see the output from the knock sensor, but you will simply see every noise the engine makes as an amount of voltage. You then have to use your own judgement to decide if you think the voltage at X RPM is knock instead of just normal engine noise. The stock ECUs have complex filtering to help it ignore sounds that aren't in the correct frequency range or aren't happening at the right time to even be knock.