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Exhaust and Air Induction

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Old 11 May 2009, 11:59 pm
owls_rayne's Avatar
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Join Date: Nov 2007
Location: Sedona, Az.
Posts: 10
Default Exhaust and Air Induction

I have two questions:
First, is that I'm deciding on buying a cast iron exhaust manifold an having the the runner bored and cleaned out for better for better flow I already have a turbo muffler on my normally aspirated '04 Pt Cruiser. From what I have read on this forum, headers don't have the longevity and are subject to cracking.

The second question is it possible to put a larger fuel injector body on the '04 PT Cruiser for more power and better fuel economy.

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Old 12 May 2009, 07:14 am
quicksilverdon's Avatar
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Join Date: Nov 2003
Location: Felton, Delaware
Posts: 20,501
Default Re: Exhaust and Air Induction

Headers do have mixed reviews. I don't recall hearin of any problems with Borla headers, just Heddman, but I could be wrong.

As to second question - More power and better fuel economy are usually opposing goals - larger injectors could produce more power, but definitely not better economy, and I'm not sure what the engine computer would do with them....
Buy an air intake. If you get a "cold air" one, you'll get more power, if you get a "short ram", better mileage and either way you'll get less hesitation when you give it the gas.
Keep your tires pumped up - I can notice when mine are 3PSI low, the car seems more sluggish - and it helps mileage, too.
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