- The most useful investment you'll want to start with is a set of gauges to monitor certain parameters if you plan to turn up your fueling any. Boost, Pyrometer (Exhaust Gas Temperature - EGT), and Transmission Temp if you have an auto trans. Fuel Pressure is another very helpful one, as fuel related issues are all but impossible to diagnose without one, and everyone has fuel issues at some point.
Brands with the best reputations include: Isspro, and Autometer. There are others of course, but as with anything, you get what you pay for.
IMPORTANT: When installing a pyrometer the best place for probe installation is pre-turbo, in the back half of the exhaust manifold about an inch from the turbo inlet. Intallation post-turbo will give you inaccurate readings, with up to 200º-300º F variation."
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