Originally Posted by CXTKRS1
I forget which company did it but an intake manifold was out for a little while but it was sort of a bust. While gains were made it was all on the top end (only a few ponies at that) and it killed off the bottom end.
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yea i think it was dynatek, but, i heard of another company je import performance and they actually do have an intake manifold for the XD but its very pricey. the gains are good. they claim 16 whp and 8 lbs-trq its not what they wanted out of the product so they only make the manifold upon request. price tag: $1000 :/