I have a 2000 Toyota Celica GT 1.8L and was looking to get either a performance Header, or Catback Exhaust system. Which would be better in terms of HP and MPG gains?
(Also I currently have an error code for the catalytic converter as well, but heard a o2 simulator could just fix that)
also, any estimates of hp and mpg gain [for both]
Dont have enough $ to get both... one or the other..
well to get the max out of performance parts a combination is always the best way to go, exhaust & header would be the way to go, neither will give you the hp that most people expect, but that also depends on future bolt ons & mods, you may see a increase in mpg but very little....
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