Quote:
Originally Posted by AutoAgenda
We highly recommend the 2'' primaries as there is no downside, especially when modding beyond a CAI and Tune. We are open to debate, but our dyno results consistently show 2'' having a slight but solid performance advantage. (Dollar per HP, picking up the last 5 hp for $45 is very beneficial, especially if adding additional mods, that 5 hp quickly turns to 15) .
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There is a possible downside, the fitment. There isn't much room on the driverside around the steering column. There are people that have fitment issues with the 1 7/8 headers as well. 2in would hit even more people. It has been noted that some engines have been known to sit one way or the other a few mm, which could be one of the culprits. Not everyone has the ability to lift their engine and move it over the few mm necessary to gain the room.