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Power Strokes
6.4 Aftermarket
New Street Truck
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[QUOTE="Extended Power, post: 438865, member: 898"] I thought that Steed Speed manifolds don't bolt up to stock up pipes? How was the test run? Stock 6.0L manifolds with stock up pipes compared to Steed Speed manifolds and custom up pipes? And are all the other people running Steed Speed manifolds scared to admit that they wasted $1500.00-$2000.00 on manifolds and up pipes...or are they actually making more power with them, and there is something phucked up with Mikes truck? Can't really see Leen selling something that lost power....not sure they can make 92 HP gains....but still would like to see more information. [/QUOTE]
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