Quote:
Originally Posted by DarkSunrise
This is probably the best explanation I've seen:
It's kind of long winded, but if I can extrapolate a bit, I think what he's saying is that the length of the two shorter primaries on UEL headers is probably the ideal length to promote exhaust flow in the torque dip range (3200-4500 RPM).
You can lengthen the shorter primaries to create an EL header, but in so doing, you lose that ideal primary length you had on two of the cylinders.
That is just how I interpret his statement, but could be wrong...
BTW I think if you extend the primary length enough, you eventually reach another resonance frequency that would generate ideal exhaust flow for that torque dip range. I think that is what Nameless was going for with their EL header, which is why the primary lengths on that header are so long. It's also a 4-2-1 design.
|
Borla continuing to be one of the few big box auto manufacturers with executives rolling up their sleeves and getting in the trenches. Hats off to David and his crew, have used them in the past for various rigs and they go up to bat for their products, with the R&D and industry know-how to do so at their pricepoints. Still mass produced stuff, but nice to see he's vested AND learned in the ways of his core business. Can't say that about many other executives these days