Buy a harness from casperselectronics that separates the iat wires from the maf. I have a centri with the iat in the intake after the tb. You need the iat after the maf and meth. You dont want to spray meth on your maf. You could place the iat in the piping after the maf and meth but I chose the intake. If the iat is not after the meth the temp drop wont register to the ecu. Maf then meth then iat.
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