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|Classified Archive Old classified ads. No Posting allowed, just for reference.|
Originally Posted by josh_trdsparks
The Injen SRI has the most HP gain out of AEM Cold Air, Injen Short Ram, SPFR Cold Air, EL Prototypes Cold Air. I haven't seen a dyno test on the Perrin so I can't say anything good or bad about it. The choice is really up to you.