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I live in california And I don’t want to worry about passing smog But I also don’t want to invest in something that not going to give a return on investment. anyone here have any experience with carb legal 91 tunes ? I see diablo sells with a preloaded tune. Is worth ? I drive a 2010 srt8 auto. Only mod is a new zoomers Cat back
 

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Assuming the regular 91 Diablo tune is smog compliant, expect very minimal gains. Wouldnt call it a waste of money if you're ok with roughly 10hp gains. You may be better off moving out of commiefornia tho lol
 
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