DME relay location/Replace for better preformence

I am looking for the location of the DME relay. I was going to chip the car but I read on Pelican parts chipping does nothing unless you run super unleaded gas. The other downside to installing a performance chip is that you basically need to run premium fuel with the chip installed. Whereas the stock chip is designed and mapped to provide good performance across a wide variety of operating conditions, the performance chips are specifically mapped to assume that you are running high octane gasoline. If your car doesn’t have a knock sensor and you run low octane gasoline with a performance chip, then harmful detonation may occur. If you run low octane fuel with a car that has a knock sensor, you will prevent detonation, but in general, you will not fully utilize the performance improvements of the chip. I then read this below......
The Motronic system is generally very reliable - its main failure points being the sensors that send data back to the DME computer. Another odd failure point appears to be the DME relay. Corroded contacts appear to cause this mission-critical part to fail somewhat intermittently. I have had many customers claim that their car runs much better right after they have replaced the DME relay. While I don’t have any empirical data to back this up, there are a lot of people who will swear by replacing their DME relay once every two years. I do recommend that you carry a spare one, as well as a spare cylinder head temperature sensor, as the failure of either of these can potentially leave you stranded on the side of the road.
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