D15, D16, D17 and Mini-Me swaps
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By drewbuisness
#174489 hey guys thinkin bout gettin sum headers, so wats better fo tha d series

4-2 headers
or
4-1

any difference and how much horsepower gain from this?
thanks 8)
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By ChicagoMike
#174493 We have 4 cylinders, and only 1 "header".

4-2-1 Low and mid range
4-1 High RPM

By just bolting up a "header", you'll probably get about 3hp to the wheels.
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By drewbuisness
#174653 sounds like it aint gonna make a difference cuz i already a 2.5" pipin no cat an wit tha header i was thinkin a lil more? :?
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By drewbuisness
#174683 lemme kn wats up? plz
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By Chance
#174865 It will make a difference. Every little bit helps :wink: