fuzzyfo Posted June 21, 2014 Share Posted June 21, 2014 planning on getting a cold air intake and cat-back exhaust for my 2jzge, is an ecu tune necessary? thinking on an Injen kit but havent decided on the exhuast yet. Quote Link to comment Share on other sites More sharing options...
dcfish Posted June 21, 2014 Share Posted June 21, 2014 Your Lexus already has a CAI, A Catback won't make any difference in performance, Just sound. A waste of $. The only way to go about an upgrade is add a Turbo and have a custom (FULL) exhaust made. That would be a proper start. Quote Link to comment Share on other sites More sharing options...
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