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Old 09-16-2004, 06:51 AM   #1
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exhaust ques.from a noob!

I am considering buying a focussport exhaust and the spi shorty header what other parts or pieces do I need to purchase?


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Old 09-16-2004, 09:02 AM   #2
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the cat-back(exhaust) and the header wil surly speed up the air leaving you car, so i would suggest craming air into your car. go with an intake and a 60mm throttle body. black diamond racing (bdr) makes a great throttle body. the same is also sold on focus central. as for the intake there are two kinds. short-ram and a full cold air intake (cai). aem is pretty much the choice for the cai, but there are others. as for the short ram, there are a few also. i have a MAC. it is a california compony. steeda sells the same one just rebadged. and there are others. to make the choice easier for yourself. just know the weather in your area. if you are prone to rain/puddling, go with the short ram so you dont have to worry bout hydrolock. or get the full cai but get a bypass valve also. the bypass will prevent you from sucking water into the engine. i hope that wasnt too much too fast. if you have any more q's, just ask. and do a search of this spi forum to find all the info you need on throttle bodys (t/b) and intakes
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Old 09-16-2004, 11:05 AM   #3
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Thanks for the info very helpful,also you quote is hilarious
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Old 09-16-2004, 03:17 PM   #4
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Quote:
Originally posted by XfocusX
the cat-back(exhaust) and the header wil surly speed up the air leaving you car, so i would suggest craming air into your car. go with an intake and a 60mm throttle body. black diamond racing (bdr) makes a great throttle body. the same is also sold on focus central. as for the intake there are two kinds. short-ram and a full cold air intake (cai). aem is pretty much the choice for the cai, but there are others. as for the short ram, there are a few also. i have a MAC. it is a california compony. steeda sells the same one just rebadged. and there are others. to make the choice easier for yourself. just know the weather in your area. if you are prone to rain/puddling, go with the short ram so you dont have to worry bout hydrolock. or get the full cai but get a bypass valve also. the bypass will prevent you from sucking water into the engine. i hope that wasnt too much too fast. if you have any more q's, just ask. and do a search of this spi forum to find all the info you need on throttle bodys (t/b) and intakes
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Good job young patawan. lol

Couple things to add:

If you get the Focus Central shorty header (The only aftermarket header currently available), it will most likely shorten the life of your stock cat (if you want a more detailed explination, just ask). If you are lucky enough to find one, you can use a stock header off of an 86-90 escort GT without worrying about your cat. The other option is an Off Road Pipe, but that is not emmissions legal, if you have to worry about that.

One final thought....
The AEM CAI is nice, but the best intake made for the focus is the Volant. If you upgrade to the 60mm TB then you will be using intakes made for the Zetec engine, so that little mod really opens up your options intake wise.
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Old 09-16-2004, 08:03 PM   #5
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If you order the BDR TB they are out. I got an e-mail from them saying that they are currently sold out. I ordered from FC, hopfully they have some. The Volant is the best intake for the focus.

Crazy_urn where can I get a bypass valve?
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Old 09-16-2004, 08:14 PM   #6
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they only one made is by AEM.

I know www.namotosports.net has them for $49.99. any place that sells AEM products should be able to get it for you. I dont know where to find the cheapest price.

BTW:
here is a great article where the test they AEM bypass valve. clicky clicky
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Old 09-16-2004, 08:34 PM   #7
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Thinks, the article was quite informative. So is the AEM bypass valve like a universal fit, or is it made for the AEM intake system?
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Old 09-16-2004, 08:45 PM   #8
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its universal, i believe. if the piping is the same size as an AEM, it will fit. so there should be no issues with any of the focus intakes.

But you just might want to double check the size of the piping before you buy. (or make sure the store you buy from will let you return it if it doesnt fit.)

Just FYI, there is a slight HP loss with the bypass valve installed. You will lose about 1hp with the valve on the average 4cyl, but i think its worth it, if your area gets puddles.
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Old 09-16-2004, 11:02 PM   #9
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the bypass is also not permanant. if you have clear summers and bad winters, put it on and take it off (if you need the 1 missing horse).
thanks urn for the clean up, i was running late for class and knew the post was incomplete but did not have time to proof read and tutch up. i knew you would not leave him hangin
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Old 09-17-2004, 02:47 AM   #10
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Volant and focussport are the two best intakes on the market. But, thats my opinion. The quality, fit and finish is perfect on both intakes. Performance wise to. Those shorty headers. Stay away from them. They will fry your cat in no time. If you want/need your cat. Go with the escort headers.... If not.... Go with an orp or race headers.
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