Mike87 Posted September 23, 2021 Share Posted September 23, 2021 I have question about the intake that's on my 09 Subaru legacy gt. I currently have the aem cold air intake 21-475C(05-06). I just checked there website, and it seems I should have went with 21-866(08-09). Is there a big difference the two? The 21-475C has been installed on my car for a long time. If I decide to get the 21-866, do I need to do a retune or is it a like for like? thanks Link to comment Share on other sites More sharing options...
m sprank Posted September 29, 2021 Share Posted September 29, 2021 Intakes are the same. 21-866C was never CARB approved, so it is not 50 state legal. 21-475C is CARB approved, but only for 05-06. Its a Cali bureaucratic technicality. Have no fear, carry on with what you have. Link to comment Share on other sites More sharing options...
Mike87 Posted September 29, 2021 Author Share Posted September 29, 2021 so, I can switch to the 21-866(08-09) with no problem? thanks for your help! Link to comment Share on other sites More sharing options...
m sprank Posted October 5, 2021 Share Posted October 5, 2021 Yes. Answered your PM as well. Link to comment Share on other sites More sharing options...
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