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#10: 02-16-2013, 09:24 PM
Title: Contributing V.P.
Location: Milwaukee
Car: 99 Legacy 2.5GT Toyota Supra 2jz/R154
Posts: 1,048
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^ So what engine and tuning set up do you have?

A bad MAF wouldn't even allow the engine to rev past 1500 let alone 4000 rpm.