I went with K&N filters and post MAF tubes. you will get gains from it maybe not like the long tube intakes, but they are there, it won't be much of a difference with the two. however, it doesn't make that "loud intake sound" you were mentioning. I got 10whp and 8ftlbs from mine without a tune. and only had AAM short tails that added another 5whp
I suggest going that route unless you want Long tube intakes. the gain difference is minimal, unless your going for huge gains. plus the Z1 tubes look good under the hood
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