Subterranean Turbo System Install
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The spray nozzle is installed by drilling a 21/64-inch hole in the air intake tube that connects from the MAF to the throttle body. A 1/8-inch NPT tap makes threads, and Teflon tape is put on the nozzle's threads before it's carefully tightened. The methanol injection is introduced into the system after the MAF, but before both the IAT sensor and throttle body. The 50/50 mix of methanol and water that is run will significantly reduce the intake temperatures, and we need the computer to recognize that, thus the placement before the IAT sensor. Needless to say, spraying any liquid into the MAF will quickly stop the engine from running and may damage the delicate electronics. View Related Article
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