3rz 4port vs. 8port heads

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Mar 2, 2010 | 02:49 PM

97singlecab

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3rz 4port vs. 8port heads

Mine is an 8 port that is dead sadly, and I found a great deal on a 4 port. Will the 4 port pass smog in california? If so, do I need a new ecu? Thanks.

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