The factory cast manifold for the 16v isnt bad the tubular manifold from the 20 is much better but it is not a direct fit for the 16v.

While it is worth doing I doubt it will give you the increase in power that you are expecting. it will however open the door for future mods that will gain power.

There are very few mods on their own (other than perhaps increasing the boost on a turbo car) that will give you a big increase in power, but parts work toghether as a package to produce the power that you want.

For $100 I would have second thoughts about the 20v extractors unless they are in fantastic condition - theyre usually reasonably rusted. Dont forget that itll prolly cost you $200 or more once you get them in place and will prolly only net you 2 or 3 hp if youre lucky.

If the engine is a small port I would spend the $100 on a set of bigport cams and getting them installed - you will see more of a difference.

If youre lucky someone will give you a set of bigport cams - they run both more lift and a longer duration than the smallport ones (240°, 7.56mm lift vs 232°, 7.1mm lift).

The factory specified timing for these cams is a little different but the big port cams should run ok without modification to the timing. If you want to spoil yourself get some adjustable cam gears. They allow you to 'dial in' the cams for perfect timing and have the added advantage of looking kick ass

I have a set of these ones:

[Updated on: Sat, 08 January 2005 15:45]

[Updated on: Wed, 12 January 2005 14:50]