Quote:
Originally Posted by Ghost of Vincent Price
Shorty headers are worthless. Might as well have your manifolds ported and go for a stealth approach.
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Worthless is a bit much. Long Tubes and bitchin' tune are the way to go for max HP and torque, but shorties will gain you some power.
In my experience shorties and a tune to compensate for them are good for around 10 HP and 10-13 TQ over the dyno graph on average, with peaks obviously being higher.