Quote:
Originally Posted by CSG Mike
It was never "just a header".
It's a long tube header that uses up the entire space occupied by the stock header and overpipe. In other words, it's both a header AND an overpipe; the comparable JDL setup would actually be $1550.
The welds are done slowly and carefully enough that there is virtually zero heat expansion, stress, or discoloration. The sheer amount of welding is significantly greater. Rather than using low cost slip-fits like the JDL, the Ace is seam welded.
While the JDL 4-2-1 is a great product and the best performing header widely available, it is very much designed to also reduce production cost. The Ace was never designed with cost reduction in mind; it's a no-holds-barred header designed with performance prioritized above cost.
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Not to mention that the only difference between the 350, 250, and 150 are the overripe, and they are designed with the idea to be swappable for their designed use case at a cheaper install cost and labor time than a whole header.