Mandrel bending versus regular

Mandrel bent pipe flows FULL FLOW everywhere because it maintains its inner volume throughout the bends, whereas a Press-bent Pipe is restictive and causes drag on the exhaust gases.....this is a well documented fact on Turbo Cars....and every horsepower is crucial to a already disadvantaged 4 cyl. vehicle.

Is it worth it? The real question, Is It Worth it TO YOU? When trying to extract the most power from a particular engine combination, everything is important. (At least to me) 1hp, here and there adds up....and can be the difference between Winning/Losing a challenge.

If anyone is interested, I have a box full of Mandrel Bent Mild Steel 2.5" 90*'s, and some 3" 90*'s....I would let go of them cheap.

Mandrel Bends > Press Bends: Hands Down